I don't think it is unreasonable to assume it was him.
I don't think that assumption would be unreasonable either, until he tells you explicitly denies it. Now for your assumption to be true, FH would have to be a liar.
If you think he's a liar, fine. But to say "I don't care what he did or says", demonstrates that you don't care whether or not your accusations are true or false.
You are the one making the accusation, the burden of proof is on you.
To be more specific, I don't care what you say. What he says is clearly relevant. I never claimed to prove anything. I am making a public log of moderator actions against my posts in the section. None of this changes the fact that only he and Theymos know for sure what happened.