While I understand what Incon is saying in his video (and I actually agree - I would be pissed if I were promised a spot and I weren't given it), I think it's disingenuous to say, "I'm just going to present the facts and let you decide for yourselves" and then repeatedly call Hirez liars. It puts a very biased and negative connotation on the events that are unfolding (which, to be fair, look bad for Hirez as of the information that we know).
In the end, as shitty as it sounds, unless Incon and everyone else has what they claim to have been told in writing, then Hirez is not legally bound to do anything about it. I know that Incon and several other people are publicly stating their side in the hopes that the community will be outraged enough that something will be done, but if Hirez winds up saying, "Them's the breaks!", then there's not much that can be done.