My snake had something stuck in his butt.

[Bogertophis]

Could he be...horny? He has locked with my females for a bit and has been good at it but with everything going on I planned to stop breeding them. I just read something about males thrashing around when a female is near..

Not seeing him, who knows? Could be? I asked that earlier...when you said he's wanting out, there's a reason for that, maybe too hot, maybe to breed, etc.
I've mostly been addressing your observations- blood, seems in pain, thrashing, aspen stuck in cloaca. Like I said, not seeing him & being online, cannot Dx.