I really can't recall what it was what made MM send him to the locker room earlier in that one game, but apart from that one incident, there were never really character concerns were there?
Well, that infamous incident wasn't the first time he threw a tantrum in the end zone. Whether he was unhappy with somebody blowing a coverage or the defensive call on those occasions is anybody's guess. It would seem the incident in question was different in that he took his complaint to the sidelines or he was told to "do your job" and mouthed back. Could have been an "f" you in there somewhere.
In any event, judging from his tweets, public comments, taunting Hugh Jackson during a game, etc. he's something of a head case. Of course that's not a disqualifier in this game, especially among CBs and WRs who tend toward the mercurial, probably because their winning and losing plays are exposed for all to see.
The bottom line is he was playing out of position in Green Bay, something I said at the time he was drafted and numerous times since, he was not a very good CB, and then he poisoned the well.
It was an unfortunate set of circumstances. Cleveland seems to tolerate "expressive personalities". But you'd wonder for how long if he doesn't play to expectations. He's playing on his 5th. year option so they're not entirely sold on him.