And the possible offense/rationale for firing apparently concerned mishandling of Hillary's emails and being less than truthful with investigators.

Maybe he deserved firing, maybe not. The method and timing was without doubt vindictive and an attempt to discredit him as a witness, but he may not be completely blameless.

These are the ones that Trump has divided and turned, just as he did the House Intel Committee, that just gave their special report of "no evidence of collusion".

It is not just the opinion of the IG. It is his team.

That would not have been the decision of the IG without some sort of coercion. Or the advice of his team of FBI agents that were working with him?

Specifically to get rid of him DAYS before full early retirement.

Yes, this is extreme abuse of power and vindictiveness/political payback by Trump which should be prosecuted.

...but the FBI has always been partisan in favor of whoever gives them the most free reign to do what they want. I'm not shedding any tears for Comey. We might not be in this position if it weren't for him and his actions.

It is not difficult to see how some could be persuaded to go along with the charges of Donald Trump. If we recall, Rudy Guiliani had his own little cadre of FBI supporters of Trump during the election.

He said it was a discrediting campaign and that there are still a lot of questions about the way McCabe was fired.

This may be where Trump crossed the line into obstruction?