Yes the "drill glitch" on NBA2k10 still works. Or in case you never heard of it this is how its done. Just clear your XBOX360 system cache (it deletes the patch only), then GO OFFLINE (I suggest unhooking your internet from the xbox360) then get on NBA2k10 and create your guy, or use your current player and follow the steps.
Please note: I wouldn;t use this player in games while online like the summer circuit or regular season games, because you don't want this guy updated or you risk being banned. Playing in crew games is fine. But every time you want this to work you must clear the cache then do it. Because once your online on NBA2k10 you will have to download the patch, in the patch this does not work.