He points to Lavin not being tough enough with Rysheed like he did DLo. We don't know all details, but it could be correct if Lavin still didn't straighten out the previous, non-death related Houdini acts RJ has pulled.
No matter the issues a player is dealing with, they have to communicate when they cannot be at practice, games, meetings, whatever....no excuse for being that irresponsible to the team.