If Fireball was behind these manipulations, why would he have undone them by an extra clearing one of the first times it happened? I lost a significant amount due to a manipulation, but instead of liquidating my position (although I was below the limit for a margin call), a second clearing occurred "due to high volatility" half an hour or an hour later. You can probably still find the announcement in the Twitter feed. Fireball quickly stopped doing this, probably he realised that this kind of ad-hoc manual interventions are not a good idea.
So Fireball has to your knowledge intervened to fix the price to a different level than the market showed, and this you bring as an argument against the otherwise clearly proven fact that he...is fixing the price. You were thrown a bone by your own declaration and would like to be thrown more in the future. You're not a "customer", by this, you're a client. In the old, Latin sense of that word.
As far as I'm concerned the point has been clearly proven. If any fools want to part with their money from this point onwards they're welcome to do it, but they won't be able to claim that they "couldn't have known". Simple as that.