I agree that it should take an act of God for this season to be worse than last... but so many incredibly bad and unlikely things and ways to lose games has happened since Frost got here.... I would not be surprised at anything at this point.
Frost obviously wasn't handling game decisions well, and the thought that him being the actual OC (even if we had one in name besides him), was taking too much of his bandwidth to properly head coach the team and do so adequately during games, seems sound. There are lots of big time head coaches that basically oversee and let assitants/OC/DC do the play by play calls during the game. Frost is not T.O. - who was not only the CEO head coach, but also the actual offensive coordinator (and did that extremely well as we all know) - and could handle both duties extremely well. T.O. did trust his assistants and DC very much, but he also was involved in much of those decisions being made personally. Frost has not shown the ability to be able to juggle those duties as well as T.O.. I really don't have a problem bringing on an actual OC who can truly call plays play by play.... but will Frost keep his nose out of things enough to let Whipple do this? And then can he make better gameplan and big decisions with less on his plate? That is the plan, let's see if it works.
Frost will still likely have a lot of input (if not actual play calling some at times) to control his own destiny, but he needs to let these well paid assistants do their jobs. The learning curve time has passed for Frost - he either figures out how to be a Head Coach of a successful team this season, or not at all at NU.