I totally disagree with your timeline. This team was arguably going to be oscar's team and program next year.
I see a few factors for this. 1) the divorce with Frank. oscar was brought in because of his proven track record talking point. He wasn't mean to be a coach who was suppose to grow and mature into the job. He was brought in to recreate the team in an image of his model. Now he wouldn't be able to do that necessarily, but there were key components to make that happen, Angel being one of them. 2) The players that were left from Frank are either graduating (3 seniors) or were candidates for Franking this season, I can think of Angel as being an exception. That fact makes them malleable as potential "oscar" guys instead of "Frank" guys. Angel as the exception though is an easy work around because he could have been a oscar type of player. Now we obviously know there was a personality conflict there, but I don't see it as a skill set issue where Angel wouldn't work in oscar's system. 3) Many of oscar's players are going to be hitting immediate playing time as the come in. There wouldn't be any true Frankite holdovers. Now Orris is an admitted exception here, but I wonder if he was always meant as a warm body and candidate for Brucing. We already knew we would have a lot of quick changeover, now if we want to talk "young team" talking point instead of "making it his program" talking point, that is an entirely different discussion.
Note: I don't mean my references to talking point as inherently negative. I use that term to cover the wide range of discussion topics and the discourse people have when referring to those talking points.