Yes. My take is it's either something major, or something unclear and they have lost confidence in their interpretation of FDA communications with them, and so they are not going to stick their neck out again with another prediction.
If there really was something "minor" in the letter they got, TEVA would surely let the world know as that had been their strategy for the previous 6 months up until that deficiency. TEVA going completely mum speaks volumes IMO.
We wouldn't be revisiting this issue if the FDA sent Teva a deficiency letter as opposed to a minor deficiency letter. This one word is the primary reason MNTA trades at such a low multiple. If Teva is unable to salvage T-Enox (as some believe) the FDA should have sent Teva a deficiency letter which allows the petitioner to decide for themselves whether it's a major or minor issue. The investment community would then speculate from a position which is fair to all companies operating in the space.