Your libelous accusation. . .
. . .to definitively repudiate your slander.
Since you're trying to play lawyer, Mr. Community Liason, which one is it? Libel or slander? They're not interchangeable terms.
The fact you are threatening and actually continuing to knowingly push a false accusation until your demands are met demonstrates you aren't making the self-mining charge in good faith.
That sir, is called extortion.
See, if you want to play lawyer, it's important to actually know what you're talking about first. Extortion is trying to get money or property which you're not entitled to from someone by means of threats to their property or family, or by falsely claiming to be entitled to it. This situation in no way resembles extortion.

Eligius seems to have only said that a specific account isn't theirs.
So you should all ask a representative, has HashFast ever used/tested on mainnet [with customer equipment]? If they have, did it ever produce any amount of BTC?
If so, then there, you have an answer. If he doesn't release a statement one way or the other one can only speculate on what the facts might be with non-definitive conclusions.