I think if you open your internal exchange as quickly as possible that would help you in the long term. I mean even the last person should know now that the coin isn't a scam but maybe they don't full trust coinexchange.io as there a quite a lot of people with bad experiences on that site.

You could easily see a slightly increasing price if the people who couldn't buy any coins in the ICO are now ready to buy it instead of withdrawing their BTC. And if the coin gains value wouldn't that be better for people who are interested in lending their coins?