Lovemyson101,
Sorry that this incident happened before you could try an intervention. Breaking and entering serves to highlight your son's level of desperation and dependence -- he is at the point where he will do just about anything to get the drugs his body and brain demand.
".... there's a good chance he'll get diverted to drug court and go to rehab....."
Fortunately, I have no first hand experience with this situation but a handful of parents in my Nar-Anon group do.
Strange as it may seem, and with the aid of 20/20 hindsight, without exception they all agree that prison was the best thing that happened to their addicted children. They were all admitted to a program which is called CREST and found their sobriety there. This is not a typical 28 day type program, more like 6 to 9 months.
At the time they all thought, as you currently do, that their child going to prison was about the worst thing which could happen, but in the long run it was actually a good thing.
Here's hoping that the lawyer is correct - diverted to drug court and sent to rehab.
Keep coming back,
Jim