Broken temp sender fix?????

I have run into another small set back with my little '92 xj. I just did the gauge cluster swap and was making an attempt to change out the temp sender located at the back of the head on the driver side when it broke off flush with the head. It seems that it may have been over-tightened because I just barely turned it and it came right off!!!

I was wondering if this was a common occurrence and what might be the best plan of attack to rectify the situation. There doesn't seem to much room for getting in there with an easy out.

Drill it and use an easy out

That is what I was thinking but due to it's location didn't think it was possible. I will give it a shot. If that doesn't work I guess I will be pulling the head off!!!