If you got one screw out and the grip on that side still doesn't come off the dried threadlock is still holding it on. The threadlock ends up glueing the bearing to the feathering spindle.

Here's what ya do. Partially thread-in the screw you removed back into the spindle, leave the screwdriver on the screw, and tap it with a small hammer. It should break free and from there the grip should come off. Good Luck!