Here is the NHL's substance abuse program document that was filed in the Boogard lawsuit:
http://sportsdocuments.com/2013/07/n...abuse-program/
IF Richards was in the NHL's rehab program and violated the program, then the most that could have happened to him was he would have gotten suspended without pay.
This incident would also be the first time he would have failed the rehab program (if he was ever in it) as he was never suspended before.