Where former members of the government, sworn to secrecy on the real alien presence, cannot talk about present or past alien matters, their oath does not prevent them from fabricating stories such as the K-2 report from the Phoenix group. Why would they bother? The trend within MJ12 has been to allow the truth to leak out, to educate the public about the nature of the alien presence and the government's past actions. Some former members resent this posture, and were more comfortable with the former mode of operation - warning the populace away from contact. Fabricating stories is unlikely to prove embarrassing, as the real story is unlikely to be unveiled to stand in contradiction to the fabrication.
To get to the truth of the matter, ask these questions. Why would these former members of intelligence operations be allowed to undertake activities which are a breach of their security oath? Why would this group have more success than all the other UFOlogy groups? Why would their findings stand at odds to the reports of contactees whose genuineness can scarcely be doubted? Where the Phoenix group claims to be seeking the truth, they themselves could scarcely stand scrutiny.