It was a choice between a rock and a hard place. Either a dump of shares by the 'thief' or a fork and risk delisting. Time will tell whether this will work out, but it was not helpful to kind of alienate Poloniex in the process that is for sure.
From a integrity perspective I would probably also have tried to shortcut the thief, but that may be personal and moral choices not everyone mat share. I suppose the communication with Poloniex could have been better or maybe propose compensation for their losses. Anyway done deal, lesson learnt and moving forward.