kushti is here (writing from a some place in Russia, yes).
First, some historical points. Scorex was started in Nov, 2014 as kinda funny project. To that moment, I spent few months working for Nxt. As you may know, Nxt prevents forking with closing code not released into production yet and also by somewhat terrible licensing(since 1.5?). Anyway, it has a lot of forks, and some of them with very interesting ideas (e.g. BURST).
To have thing open to the extreme I've published Scorex under CC0(Public Domain) license, so everyone can do literally anything with the code.
Since last autumn development of Scorex is subsidized by IOHK, and since Feb I'm a Research Fellow and Scorex project director in IOHK Research.
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Well, Scorex(as well as papers publicly published) could be used in any project. That surely does not mean collaboration with IOHK. However, we would like to get issues on core functionality to be reported to resolve and also (and especially) pull requests.
Me & Sasha, Charles & Sasha, and three of us had some conversations after Sasha's decision to build Waves on top of Scorex. No any collaboration has been established to the moment as a result. And that is surely up to Charles.
I do not endorse neither oppose Waves ICO. I do not have much technical details, and I'm not competent in other topics.
The thing I've read from this is that you have been advising Sascha on how to manage the project, but have no legal contract and Charles would have said no anyway. Meaning that you can not be mentioned on their website as a part of the team, but still, the way Charles stated it in the tweet and in the OP is misleading and seems to try and harm the ICO on purpose.