Quote Originally Posted by newguydude1 View Post
if we have two "valid" interpretations, and one makes over half the feats unusable, which of the two "valid" interpretations is most likely to be the correct interpretation?
You would have two valid interpretations. The consequences of one "thing" over another "thing" doesn't somehow negate the reality that both "thing" and "thing" are valid.

The point remains: Your GM has to adjudicate the rules in this regards if he is willing to accept your interpretation that it takes a free action to do, which if I must add is a perfectly reasonable interpretation of the rules (not RAW though), or the RAW that it takes at minimum a standard action to activate a single psionic feat, thus making it impossible to benefit from this without access to a second standard action.

For what it is worth, I would not blame your GM for taking the path of least resistance on this one, as this would almost assuredly never come up in any real game that isn't just a TO session.