Thanks so much for this again, but just noticed that when I reach the end/re-enter the pinned section, the cards transform resets to 0, and re animates back. You can see what I mean in the code pen if you scroll back and forth between the end-pin marker on card 1 and 2.
I've looked up docs on how to reverse an animation to no solution, but I'm not sure if that's what I want here.