This is the most possible thing to happen. Bounty hunters never care for the future of the coins. They are just in for a quick cash and forget about it. So expect a massive sales from bounty hunters right after the ICO ended and their bounty is distributed.
When is the bounty tokens going to be distribute? the timing of the distribution is key, for me I want the distribution to be distributed early so anybody that want to dump should do early and let the token price find it feet.