Welcome to the forum, Dawid and Surya!
I personally very much appreciate the discussion being moved from Twitter to this forum, where it is possible to discuss in a more thorough manner. My experience is that thoroughness tend to increase understanding, which I believe is particularly important on sensitive issues like this one.
I don’t know whether @jon_tennant reads this or not. I think he’s taking some time off internet, Twitter in particularly, at the moment. Which I can completely sympathize with. There are however a few things in Dawid’s post above that is possible for others to answer or clarify.
As Surya replied, OpenCon has a policy of not making any details public, and my understanding is that Jon would break that confidentiality by himself saying anything about what behavior the ban actually refers to. We are thus all in the exact same position: no one has any details at all but there are a lot of public speculations. I personally believe that all the speculating has been and still is quite devastating for Jon’s case.
You can find OpenCon’s definitions of sexual harassment here and below are examples of such harassment from their Code of Conduct:
Some examples of sexual harassment include (but are not limited to):
Unwelcome and repeated flirtations, propositions, advances, or other sexual attention—including gratuitous or off-topic sexual images or behaviour
Unwelcome physical contact
Looking at someone in a way that makes them uncomfortable
Use of stereotypes
Offensive, insulting, derogatory, or degrading remarks
Unwelcome comments about appearance
Sexual jokes or use of sexually explicit or offensive language
Gender- or sex-based pranks
Display of sexually suggestive objects or pictures
Demands for sexual favors in exchange for favorable or preferential treatment
OpenCon is not the same as Open Science MOOC (Jon is the founder of the latter; IGDORE & Open Science MOOC are strategic partners): they are two completely different organisations. Jon was banned 1 year ago from OpenCon. No other organisation, including Open Science MOOC, has banned him or otherwise reprimanded him as far as I know. Open Science MOOC released a brief statement the other day saying that they will release a public statement today, Friday. Thus, the Twitter post where someone claimed that Open Science MOOC has banned Jon is as far as I know only another public speculation shared with too strong certainty on Twitter.