Based on modlog, he only woke up, there's no password or email changed. Maybe, he's just an alt account from someone else? as we know to join Stake campaign only need to make long shitpost in gambling section without need to earn merit.

I guess if he can sign a message, case closed?


Nah, either you create a coming back statement or you stay silent, if someone feel something suspicious, you're ended up in the same fate. Take a look on this thread.