If I remember correctly, #AIA was delisted not because of market manipulation, but because the two founders had a falling out. The founder controlling the contract was afraid that the founder controlling the spot market would cause trouble, so they changed the token contract and delisted it. One of them held a large proportion of the spot market that couldn't be sold, while the other held the contract and didn't share the profits from market-making, leading to the bizarre situation where the contract was delisted and then relisted a few months later...