ORIGINAL: Shok
He does apparently have an AMA membership, just not the waiver which is fine in his case.
According to the AMA, that's wrong on both counts.
(1) The AMA told Harley this guy is NOT a member
(2) Per the AMA bigwigs, if you are an AMA member you are required to follow all AMA rules at ALL times, not just when you feel like it – in which case an AMA member flying a turbine without a waiver is not "fine" just because he's flying from a private field. (I'm not saying that's how things SHOULD be – just that that's how they ARE according to the AMA).