I tried putting back in the ignition coil that I purchased in December to replace the stock coil, and guess what? Missfire after TCC lockup and OD. I pulled over and put the spare old coil back on and the misfire went away. So I have it narrowed down to a bad coil. We'll see if the auto supply store will exchange it.
I did catch the bad coil sparking from the mounting screw to somewhere on the plastic part of the coil for a few seconds - the plastic must have a problem with the insulation.
FYI I also took the ICM off and cleaned the underside of it and the mounting plate. It was a little dirty under there. I used a wire brush and then rubbing alcohol.