If you commit a new crime on probation - even a misdemeanors - you can get jail time under SB91, period. 
As to substance abuse treatment not being available because the DOC’s only treatment provider withdrew its contract in December: BS. There hasn’t been treatment since September 2016 and that is on the DOC. They have been dragging their feet because the state wants to directly provide the treatment, so they’re present and/or listen in on confidential substance abuse counseling and interfere in treatment programs. They have finally begun some “treatment light “ programs. To the extent that has or will be implemented, it will fail. The DOC is punishment, not rehabilitation oriented. Nor does it begin to understand substance abuse or treatment.  Treatment requires confidentiality, a core precept is that a person admit to all the crimes and bad conduct they committed.  What inmate is going to do that with a correctional officer standing next to him or her or listening in via monitor.