Why on earth should a decentralized exchange bail out a centralized exchange? Perhaps if they had immediately owned up to the loss of account access 10 months ago, but if this is a reality and they have been operating a fractional reserve instead then they shouldn't be bailed out. Considering Poloniex is a minor exchange for BTS, they shouldn't get special treatment.
They aught to buy the 290M BTS on competitor exchanges, helping drive the price of BTS up.
Or are you proposing to fork to reclaim the ownership permissions? How would consensus on this be reached? Couldn't witnesses/committee/BTS-Holders reject the proposal?