It is very possible. However, if your boyfriend received 30 days for a probation violation, it sounds like he has a checkered criminal background, and he should not expect a particularly-light sentence. And, if he's still on probation, the new crime will also be a violation of his probation.
The result from court for any violation of probation can be anywhere in between additional conditions to probation to a re-sentence up to the maximum.
Your boyfriend needs a lawyer to try to get this situation straight with the State - just because probation recommends something, once the court is involved the recommendation of the prosecution will carry as much if not more weight with the court.
One question I have is what was he on probation for? This will be considered in deciding what his punishment should be. If he has an alcohol problem, he should get in a program now. Certainly this is one of the potential punishments...so is jail time. He should hire a good attorney ASAP.
Hedding Law Firm