I would actually say that it is, in fact, uncommon to pull what T2 did. Screwing over contractors in general and even in-house studios isn't that uncommon, unfortunately. But this move combines the general horribleness of how major publishers treat small studios with extremely unprofessional recruiting behavior on top of questionable negotiation tactics. None of it is unique, but I really can't think of another example where publisher has gone this far. Though, yes, EA has certainly made strides