Here is a response from Dave himself. I waited to post it because he didn't give me his approval. I asked him over a week ago and got no response, so I will assume he doesn't mind.
Dave said:
I think the discussion on e dgcr is rather inaccurate and getting out of control.
no discs of ours that are pdga approved have been considered illegal by the pdga.
jeff Homburg ( who represents the pdga for tec standards testing) emailed me that a run of our discs (G9i) was too stiff and we volunteered to stop selling both g9i and mediums in all models for now.
as you and the rest of the players know theres more innova drivers that do not pass the pdga tech standards for flex out there than all other companies "legal" discs combined in play at most pdga events.
the only 2 mens open players i know of that won pdga worlds championships or usdgc without a firm putter and approach in the least 23 years ( that didnt pass pdga tech standards were ron russell and eric McCabe). everyone else had firm putters. its possible Nate doss may not have used too firm discs but i think he had really firm magnets at some point.
Its true the g9i's were pretty stiff,,we are just trying to give customers what they want.
Please keep in mind it was written on a mobile device, which may explan the typos.