Yep, resize without the pin if all you want to do is size the brass. Then just rebuild the rounds normally.
If you want those primers for another application, you can use your sizing die or a universal decapper to gently press out unfired primers. They are designed to fire only from a sharp strike to the center of the cup face, so pressing gently on the anvil should not do it. Still, wear safety glasses and hearing protection.
Primers removed in this way can be reused. I recently backed out a hundred primers from old .223 tracer rounds (unknown brand, of course) without incident and have reused a couple dozen or so with 100% bang rate. You could easily test a few by resizing brass normally, recovering the primers, reseating them, and firing them in your gun.
Bet your next paycheck they go bang.