[kens]

I mentioned that in the article. A miner can't "steal" a block they solved for a pool. The miners are working on a block that pays the reward to the pool. If the miner successfully mines a block and bypasses the pool, the address in the block is still the pool's address, so that's still where the 25 bitcoins go. If the miner tries to change the address, the hash changes and the block is no longer valid, so the miner can't submit the tampered block.

There is a theoretical attack where the miner throws away a successful block, so nobody gets the reward and the pool suffers. But it's a whole lot of work just to annoy people and this solution-witholding attack isn't viewed as a real problem: http://bitcoin.stackexchange.com/questions/1338/how-is-block...