That's awesome man. I can only imagine that moment of relief you experienced when the ez-out bit and started to spin the piece out. Non-car guys just don't understand. haha!
Wilwood puts sealant on those threads too, so I took an old crappy drill bit and heated the shank cherry red. Stuck it inside a few times to loosen the sealant. It came right out. I sacrificed the bit but saved the caliper. I'm okay with it.