There's definitely some friction between Mek & Felton. I've noticed a few times that Felts won't pass him the ball after Mek sets the screen. Granted it'd leave Mek about 15-20 ft. from the basket and I don't really want him to have it that far out either...but I can see how that would piss him off, esp. since this is his "goal oriented" season.
Add to that V's comments about how his PGs say that Mek isn't making himself available (which I agree with) I think there's no doubt there are "issues" there.
Mek just looks upset in general. Every pass he fumbles, every foul called on him, every pass that is going to him but gets knocked away by a defender...Mek looks unhappy.
Think maybe Emeka is thinking too much about that contract? Maybe he's blaming everyone else for his subpar numbers this year?