Hi, sml.
Welcome.
Sorry for your situation, but glad you found us.
It's hard to know what to do.
I have an alcohol addicted sib and an enabling mother.
I am her caregiver, so sometimes I am in the middle of their stuff, though I try like anything to stay on my side of the street.
I agree with the other posters that bailing your sib out isn't the answer.
Hard as it is, let him stay in jail.
Nothing changes if nothing changes.
Addiction is horrible.