After the Tennesse Tech game Ferentz did say that McCall would be out for the season. However, later the same week, Ferentz said that McCall might return later in the season.
Further, it is not Iowa's decision whether McCall is eligible for a medical hardship waiver. A formal application has to be made to the NCAA through the Big Ten office. The application must contain the player's complete medical record including x-rays, MRIs, etc.
Contrary to the statements made on the podcast, Moeki's medical record indicated that his injury kept him out the entire season. Obviously, Iowa did not chose to keep him out the rest of the season. The injury kept him out the remainder of the season.