Really? I'm still having the same problems with the 10/12 Roster (less contact, easier to dunk).
OK, when I started up the game just now and played a Quick Game, it seems that the game is back to normal...I don't know if it's a placebo affect after reading your post but it seems that it's really hard to get into the lane and dunk again, which is awesome!
I don't know what changed from last nite, I did not touch the sliders or settings but it does feel CONTACT is back! It could be my mind, but I believe it's the Server, cause I did not download anything (roster), after I booted up the game and log on to the 2K Servers the game felt like it felt when I first played it.