I would not bet on re-instatement of probation. From the fact provided most any judge would see this person is not going about the business if addressing his problems in a responsible way. But for the love of his Mom, he would have been gone a long time ago. This question needs to be understood in term of discretion. That is, somewhere between whim and prayful decernment. Laws do not mean much and when things happen in this sphere, "usual" becomes too variable to count on. Good luck.
What was his original sentence? How much has he served? Subtract. That will tell you what his exposure is as far as a revocation. But it's all about money. If he can pay all his restitution he should be able to negotiate a favorable result. If he can't pay, he is facing the revocation of the balance.