I am not sure, but I think you can set up a new wallet, send the tokens you like to the new wallet. You can keep using the old one for the airdrops, and send the worthy tokens to the new wallet.
Really he can't I believe. Only if he want to loose hell tons of money on commission. As I know only if you are buying something with currency it's a low commission. If you are transfering it from wallet to wallet you're loosing lot of coins.