My .02 as well.  Not directed specifically at the OP, speaking in general.  

When people treat a stallion like a gelding, they are asking for problems.  You wouldn't treat a hand granade like football, even though they have similarities.  If you aren't set up for a stallion don't get one.  If you don't know how to handle a stallion don't get one.    

Live cover typically makes them a little tougher to handle. You originally asked why he triggered. My guess is:

1) He’s a stallion in his prime 

2) He knows what live cover is

3) He knows it’s breeding season

He may very well be fine running with the geldings in the off season. But if you want a breeding stallion, he needs to be pulled prior to breeding season. While he was fine in the past, I’m not trying to be mean...but by leaving him with those geldings during breeding season...you were setting him up to fail eventually.

Its been several years now but a friend whom I hauled with had a stud, he was around 10 at this time. He tried to mount my GELDING while I was on him. I stepped off and was kicked in the head, back and legs several times until someone threw a bucket and hit him hard enough on the head to make him stop. The entire time she was on him and wasnt able to do a thing. I had to be taken away in an ambulance and had a cracked vertibre, broke tail bone and tore muscles in my leg. She kept him a stud for many years after. I stayed away and still do when i see them out. 

I think you did the smart thing by gelding him. Once they know they are the "boss" its hard to make them see other wise. Thoughts are with you because Im sure its hard!

I hate it for you but I’m glad you got him gelded.

I don’t feel your being mean. I’m younger and he was my first stallion to stand by myself. So I guess you live and learn. Thanks for your reply I appreciate all the info!

Thank you. I hate it too. I thought I did all the right things.(so I thought) I  Followed a repo vet and stud farm for a few years. Felt like a paid my dues. (Of course always room for improvement/new learning opportunities) saved money for years. Found the bloodlines got him as a yearling and got him to 7 years old. And no we weren’t a big name stallion but we were successful and it was fun owning/standing him. But when I first decided I wanted to do this years ago I promised my self I would never put on the rose colored glasses and if he ever got dangerous to people I would geld him immediately. Sorry for the long post. Still heavy on my heart ??

I agree with a couple of other posters...........not sure I would be in a hurry to geld him over this. A lot of stallions can not be pastured with geldings and even though he had been with these geldings his instinct and hormones kicked in to run off the other weaker males, for whatever reason. Guess the full moon and mares in heat got him fired up and the geldings were a threat in his mind.

He has not been hard to handle, has not shown any problems with people handling him, etc., then I would change how he is pastured and go from there.

i think you are absolutely doing the right thing . some friend owned a bomb proof stud   at 24 he savagaed her dang near tore her breast off.    but its was ur decision and i appuld you have the smarts to do it

When he attacked a human he crossed the line, I would had him gelded too, and this is what the OP did, I think she did the right thing in getting him gelded. 

I completely forgot until I read this post. . . Lula Bell was on her mare at a barrel run year before last when someone's stud (NOT AT ALL like the studs we've been talking about) tired to mount Peekaboo.   It could have been catastrophic, but thank God Peek spun and got LB and herself away from him.  At that point the stud was in major danger tho--LB's daddy was going for him AND THEN for the owner but friends stopped him.   People that don't know horses most assuredly don't need to own and/or ride studs around other people and horses.   Have mercy, know your limits so that everyone is safe. . . . 

This is surely not directed at the OP 

Yes, this a hundered times over!  You didn't do anything wrong, it's not your fault he attacked your geldings out in the field.  But this reason, and all of the comments I have read, make me grateful I got out of the stallion game a long time ago.  Best of luck to you, I hope he makes an excellent gelding.

That had to be scary. A stallion is a stallion we have a nice one but wouldn’t trust one.  Spring and nuts probably what’s making him act up. 

That had to be scary. A stallion is a stallion we have a nice one but wouldn’t trust one.  Spring and nuts probably what’s making him act up. 

Bumping this back up, I think it should stay at the top for the younger stallion owners to be on their top alert owning a stallion. 

Edited to add, I think the OP did the right thing and I THANK HER for telling her story, this should be an eye opener for any one that wants to own and haul a stallion..

I will say it again---EVERY PERSON WHO WANTS TO OWN A STUD SHOULD READ THIS POST !!!!!!!!!!!!!!!!!!!!!!!!

She would have had a lot more than a law suite on her hands. 

If I could change the title I would but can’t figure it out lol

Its simple, just edit the title, click onto the title and you can change it..

Just giving this another bump, since its a good topic

We decided we weren't taking any chances either, despite how highly talented of a horse this guy is turning out to be. Nerp!