There are multiple videos on youtube but here is a link to one i like. Hope that helps.
https://www.youtube.com/watch?v=bjz9IbO0CfI
I used this video to free a card out of a BGS holder for my first time today. I was truly scared that I would damage the card, but this technique worked perfectly. The only thing I did different is I put the slab into a graded card team bag first to keep any plastic shards from flying around. It took me 10 seconds to free the card, no joke, easy and painless.
STEP 1 - Got my trusty old school rusty heavy duty wire cutters handed down from my dad:
STEP 2 - Put the cutters at the top edge in the middle above the label and applied slight pressure, and the holder split perfectly in two.
STEP 3 - Carefully slid one side of the holder away from the card.
STEP 4 - Remove sleeved card from the other half of the holder. Card was in perfect shape and the team bag trapped all the little plastic pieces. Cut one edge of the sleeve with scissors and the card was free.
STEP 5 - Apologize to my little Ewok for waking him from his 5th nap of the day, he gave me the classic WTF look when I snapped the holder. A tasty treat later and he forgave me.
So I was really curious how this card graded a 9, with it in the holder it looked dead nuts perfect.
It got three 9 subgrades which I just couldn't believe, so I decided to bust it out of the holder to see if I was missing something. Once out of the holder I got out the bright light and heavy duty magnifier. I could not see a single imperfection in this card, it is absolutely 100% perfect in every regard. This makes me have even less trust in grading companies, I will never pay to grade, or buy a graded a modern card. All I can think is the person at BGS was having a really bad day, or he had something against whoever sent this in for grading. It is gem mint perfect and happy to be freed from it's plastic hell.
Anyways, hope this helps the next person who wants to bust open a BGS slab. It's very easy and takes less then 30 seconds start to finish. Good luck. :beer: