He missed 1 workout. ONE.
So Les Miles put him on blast for missing one workout, no.
He won't be asked to hold up in coverage. You think you know how to use Montgomery better than Wade and Herring do? Really? His job is to jam the hell out of the TE, to read run or pass and then stuff the run or get after the QB. He might be asked to play some zone but coverage is not his purpose.
IMO good teams, like the Patriots, will find a way to exploit him.
Montori Hughes started off at the University of Tennessee and was suspended multiple times and ultimately dismissed.
Link
And something from your own link:
Montori Hughes is a lazier and much less athletic version of Travis Johnson. He's got danger flags all over him.
Sam Montgomery is a high motor player. The games he "took off" were games where LSU won by more than 30 points. He played his best in the higher pressure games.