I don't mean to be conspiratorial, but I don't see solid evidence that this is not a scam.
You are turning the tables. Suggesting someone is scamming you need evidence first. Not the other way around. 'I can accuse or suggest he is scamming as long as my money is locked', is false and unjust to him.
Given that we don't have anything to go by other than what Simon has said, we don't have any evidence one way or the other. That means we're stuck with trust as our guideline. And the communication from Simon hasn't really increased my trust in him, simple drops here and there, and not answering relevant questions (like why he hasn't released any of the btc yet, and why there has been recent movement from the hot wallet)