Just curious, were the fiber pad and the stainless backing reinstalled with the new EBC pads? If not, I would try that first. If yes, the pad grease others recommended might work. Or if you have moly grease or powder, rub a very light coat, almost nothing so it doesn't migrate onto the friction surfaces. Also remember the EBC HH pads need to be bedded. That may fix it
It looks like you may be right and that maybe I didn't get the rear pads bedded in completely. I went for a ride yesterday and I was going to buy some of that red goop. On the way there I was coming to a stop and the rear started to squeal. It pissed me off so I stomped on it, activating ABS. After that, no squeal. I couldn't make it squeal no matter what I did after that.
Lesson learned.