The screws aren't recessed, right?
Get some 5 inch mini Vampliers and use them to remove the screws yourself. You may have to bend the pocket clip out of the way first.
Alternatively, you may be able to get away with using a normal pair of small needle nose pliers to just reach in from the side, grab the screw heads firmly, and unscrew them gradually. One small twist at a time. It might take longer, but this way you can avoid having to bend the pocket clip because you aren't unscrewing from the top down. You're going in from the side instead, where the clip isn't blocking access to the screw heads. I have used this method in the past to remove non-recessed screws when I didn't have the required bit. It can chew up the screw heads, but they're already damaged anyway, so it doesn't matter.
Another thing you can do if you are willing to bend the pocket clip out of the way is notch the screw heads with a metal saw and then use a slotted screwdriver in the notches you made to then unscrew the screws.
