Well, if the majority of miners refuse to process transactions originated by thiefs, then the address would effectively become banned. Think of it as a "51% defense" (homage to 51% attack).
The same problem is still there. I sell something for bitcoins (instant purchase), the hacker immediately spends his bitcoins (before some central authority decides to ban the address) and I am left with a bunch of worthless bitcoins in the end.
This would undermine the whole p2p currency, "controlled by no one" concept. I think every sane miner would stop using a pool that would try to control the network in any way.
So, yes it could be done, but it would destroy bitcoin as we know it.