was crusing around, how about these options

Pliers Method
1. I twist the holder in clockwise, counterclockwise motions, with one hand at the top and the other at the bottom. This loosens seams, especially in those thick NGC slabs.
2. I position the pliers at a top corner of the holder by the label, farthest from the coin.
3. I put the hand towel over the holder and pliers and grip, grip, grip.
4. Usually I have to go through #2 and #3 above three or four times, each one coming closer to the coin, before the seams give way enough for me to pull apart the holder as gently as possible, again under the protective towel. (NOTE: At this point on occasion I also used a jeweler's slotted screwdriver to help pry open the holder, keeping the blade as far away from the coin as possible.)
5. Once the holder is opened, the coin usually remains in the slab's washer. I carefully place the coin still in its washer on a space farthest away from the cracked plastic on the cloth. Then I clean every bit of plastic from the work place and save the label for future reference because I plan to resubmit the coin to the same or different grading company.
6. I take a deep breath and then do not breathe near the coin, gently squeezing the lower pocket of the flip until it opens.
7. I place the coin in its washer above the open lower pocket and use a gloved finger to free the coin from its washer, tilting the flip until the coin slides into the lower pocket.
Screwdriver Method
1. To loosen the seams, I twist the holder in clockwise, counterclockwise motions, with one hand at the top and the other at the bottom.
2. I place a tiny jeweler's screwdriver with a slotted blade on a seam of the holder by the label, farthest from the coin.
3. Using the hammer I gently tap the screwdriver into the seam, being careful to use just enough force break the seam so that the head of the screwdriver pierces the plastic.
4. Keeping the tiniest screwdriver in place, I take the next largest size screwdriver and tap that into place next to the first screwdriver. When the second screwdriver is inserted, I remove the first and keep repeating the process with larger screwdrivers until the seams pull apart.
Then I follow steps 5-7 as outlined above in the Pliers Method.
With the coin in the flip, I adhere the label and go to my next break-out holder, following the same process.
So far using both methods I have not damaged any coin, possession or myself because I put safety above speed in removing coins, preserving their worth.
that's jus on goggle, yea I know its misspelled...teach!