Of course he'll get away with it, it probably 'helps' his cause that the wizards are god awful so far this season and have already fired their coach and really have no shot - even if arenas comes back at like 80% - so the argument could be made that he should FULLY heal for the whole season instead of coming back too early or he'll aggravate it again.
How does insurance work in this case - is insruance helping the wizards in this instance - if so, yet another reason for the wiz wanting him to spend entire (lost) season 'injured'
Of course - even at 100% the wizards aren't going to make much noise in the post season in the eastern conference, that GM will be fired in a year or so