Yep.
Reason #1 they stop moving? Because they know Melo is gonna iso-bully his way into the paint with his head down. I like when players are extremely aggressive getting to the basket. The problem with players like Carmelo and to a lesser extent, Cousins, is that they do it with their head down and then jack up terrible shots that get blocked or are so badly missed that it starts a break going the other way while hes complaining to the ref. Melo would be the perfect stretch 4, like he is with the Olympic team...But his ego just won't allow it when it comes to the NBA.
DMC has been getting much better at it though. Particularly this year now that they're actually putting him in spots he can score, and moving around him and presenting them selves as options for him to pass to. He's been passing out of the post a fair bit.
Or was, i haven't watched a kings game in 2 weeks.
But yeah, Melo's head down drive is surely part of it. Part of that though is that he's absorbing a lot of contact. Mainly because he is playing at the 4 instead of the 3. If he was playing at the 3, he'd be getting in there and overpowering guys a lot easier. We'll never know i guess. He is what he is on this team.