Wait. If the attacker did any of that while it was in control, then wouldn't it fail validation for every other bitcoin miner? If they lose their 50% control t

Wait. If the attacker did any of that while it was in control, then wouldn't it fail validation for every other bitcoin miner? If they lose their 50% control then they generate invalid blocks. Particularly the part regarding the number of coins generated per block. That one will obviously be wrong.