It seems clear to me that Bittrex is not following the ITO rules. ITO is complete, the funds were obtained withing the ITO time frame of 7 days and Bittrex should now be consider to be part of the FUD campaign.
Bittrex are doing the right thing by ensuring that people who bought before the scandalous allegations were made public can reverse their decision without feeling like they were conned into buying into a project they no-longer believe is what it claims to be.
That there may have been more than 850BTC raised prior to the buywall is irrelevant, because only the total BTC that remains after the buyback period has ended actually count as being willingly invested.
This is incorrect. Bittrex's buyback period has nothing to do with the smear campaign.
Bittrex explicitly states that the buyback period is because of trading being enabled on Poloniex. That is all.