Ah, thanks... this board is great, 24x7 tech support! Not sure what the correct method for removing these suckers is, but prying them out with a screwdriver is a bad idea . First came out fine, second shattered. In the end, I used pliers to push on the clip from the bottom and popped it out.
Well, I'll try again next weekend. After I got in there and ran up against the HVAC, I also decided I wanted different cables.