Hit it right on the head. Wells/Sheridan were scapegoats. Not saying they deserve to come back, but the failure of the offense falls on Taggart, he calls the plays and that's his "specialty". I only hope we bring in a great Offensive mind and Taggart gives up the play calling duties...
Let's play Devil's advocate here. Maybe CWT's offense would have been great with OL that could block and QBs that were developed better.
If you've ever been a supervisor, you would know that some things get delegated and if your subordinates don't perform it affects what you're trying to do.
Of course the assistant coaches had something to do with the performance (or lack thereof) this year. That is why there are assistants, One man cannot coach 105 football players all by himself. Assuming he wasn't ordered to fire these two (and I really don't think he was), he deserves some credit if he was right that they needed to be replaced.
But there are two major points to consider.
1. Taggart hired these guys. Why do we think the next hires will be better?
2. Did it really take him an entire month after the season was over to realize these guys were part of the problem? If he is this slow to recognize where the issues are, that is a problem.
Pretty sure he was.
Conjecture, or inside info?
If I say inside info I'll be asked who my source was. I was taken to task for telling who my source was on a different topic a few months ago. I have no desire to go through all that crap again.
So my answer to your question? Yes.