I think if Tyronne Lue had been doing his job, Blatt would've never attempted to call the time out. In every huddle I've ever been in, late in the game especially, an assistant coach sticks his head in the huddle at some point & says, " we've got X amount of timeouts left guys." And that is for the head coaches ears & benefit as well.
As for the Cavs job, I think if they think about it, they've get the perfect type coach...one that they won't have to pay huge $$$ and is seemingly fine with Lebron being the de facto coach of the team.
Cal, and other successful coaches like him, may be "players coaches," but that doesn't mean they would sit back & allow Lebron to project himself as the real coach, or throw them under the bus as he did Blatt with his "I scrapped the play" comment.