The logic board screws can strip very easily. I had 3 do so using a brand new T6 hand screwdriver.
I was able to get them out eventually by pushing a T7 very hard into the grooves and essentially rocking the screw. What I mean is, just trying to get it to make that crack sound that the screw came loose. Pushing hard down and trying to twist just a little, and repeat. Eventually they all cracked loose and came out.
Good luck and be careful. My MBP is able to play Hulu videos now without overheating and stuttering!