No doubt the learning curve for AP as full-time HC. Odds are he is over his head -- made all the more likely by the team losing in ever more creative ways.
AP understands D. And when one unit or player has problems, they get fixed.
It is clear he has a metric fuckton to learn about O. His approach to understanding it is using D-based concepts. He talks about the O-line issues as communications and hand placement, and talks about as assignments as "a hat on a hat." And he sat in a lot of O meetings the first five-seven weeks.
One thing that he has done as HC is not trivial -- this team has not turned on itself. It's utterly plain the O problems were Miscue, Gestsy and his peeps. The D only talks about what they didn't do. The O owns its own miserable performance. This started last season when they lost 0-3 to the Vikings.
My guess is there is a season end meeting with Mark, Telescope, St. Tom, and AP. What did he do well, what did he not do well, what did he learn, what does he think/identify/want/plan to do to address the many weaknesses.
If a hot OC HC candidate appears and can be hired, fine. But take into consideration what that means for the D. If that HC pulls a dumb move and hires a Tampa 2 coverage scheme with a 3-4 front, I'd stick with AP and have St. Tom and Telescope search for and sign the OC.