My understanding of bitcoin could be wrong here, but I'm pretty sure that would be physically impossible. I think you would need the private key to make the transaction, and only then would >51% of the miners be able to accept the transaction.
The entire point of the Bitcoin protocol, and the beauty of the system, is that there's no one authority that enforces legality of a transaction. Transactions are not accepted because they're legal; they're legal because they're accepted.
Any miner is free to accept any transactions they want. It's just that, without the consensus of the rest of the network, mining blocks that everyone else considers invalid is a waste of CPU cycles.
