Comey is being set up as the guy who defied Obama.
I think this is the hill they'll do battle on. It looks like maycome down to a public pissing contest between Comey and Obama (+ his flunkies). Insubordination (if the OIG leak is true) shifts the vector to a Comey/Obama exchange. Have to see if Comey comes out firing against the insubordination charges, because he can only fire in Obama's direction, not Trumps. If Comey has the goods and has been flipped we're in good shape.
Obama, if caught, will take Clinton with him, IMO.
If Trump 'fired' Comey to set up the sting, yes, we will thank him for it.