In fact, they do not use collected ethers to re-contribute money to the ICO. Instead, they buy back tokens on Bitfinex and support the price. When price fell from the top to the very bottom people complained that EOS token is falling and were dissapointed, so I believe that EOS decided to spend part of the collected ethers to do buy backs and support the price.

It's not bad in my opinion. At least, if they won't dump these tokens one day.