For 25k I'd probably find a way... increase credit line, church fund raiser, etc. and tell him he has to pay it back as soon as he can. The money would then go back to the various sources that helped. Now if he was a deadbeat and I knew he'll probably just do something stupid again, I'd probably be more hesitant but I believe in giving at least 1 chance.
It's either that or knowing that some strangers are going to be raping and beating him every night.
In reality though, arn't bails usually set in the millions? Basically they don't want the average joe to be able to afford it, but if you're a 1%er you can get away with most crimes. Like that rich kid who keeps killing people in DUI accidents but keeps buying his justice. Have not heard about that guy in a while actually.
Edit: skimmed through OP and missed that it was 250k not 25k. That's a bit tougher. Would not sell my house but I'd try to start some kind of fund I guess.