He was angry - but didn't yell anything at the end of the game that many many coaches aren't yelling during the rest of the game.
Did he say anything critical of the refs during his post game press conference? I don't think anyone has linked it if he did.
For the record - in his press conference today, Kalani said that the conference is looking into everything. The penalties, the calls, the end of the game, Robert's catch, etc., and that he trusts they'll figure things out. There was enough going on, I doubt they want to comment on one thing without commenting on all of it and being done with it.