I think you deduct his 1/2 of the cost of the horses from what he would owe you from your 1/2 of the IRS's, pensions, savings, etc?
Just an example...If the horses are worth $1500 his 1/2 = $750.. then if you're owed 1/2 of his pensions, 401K, etc $1000 = $1000- $750 = $250 owed to you & you keep the horses by buying out his 1/2 of them in exchange for portion of what he owes you from the retirement stuff.
Sounds like he's doing the 'vampire' stuff breakaway told you about. Keep that in mind... stay in the moment & work hard to have strength & honor.
Enjoy your week-end! Bridge
Divorced 03/2010 Mom to two amazing kids
Taking the road less traveled because those encountered on the way may be just as unique.