Eh...sealing off a big on a drive to the hoop is as old as time. This tactic has been employed in all levels of basketball seemingly forever. Don't go looking to the refs for help, cuz they ain't calling it (nor would I want them to, b/c UK does the same thing).
The real problem is Bradshaw (and Ugo to a lesser extent) are just not physical enough. So they will continue to get sealed.
Secondarily to that, it would actually help if our guards could stay in front of their man, if only 25% better than they are now...would be a night and day difference.
But Wagner, Dilly, and Shep are terrible at guarding the ball. My favorite is when Shep goes for a ball fake when the guy is 35 feet from the hoop. Like what are you doing dude?