Hey there that’s a great question I don’t think I have seen that asked here before
Yes you can do surgery and Ty and get the shell off but that has so many risk like damage or giving it different viruses from contact who knows where your hands go throughout a day
I know a simple an easy trick to get the shell off
If you get a spray bottle or a water dropper just something you can get single drops of water to come out of
You then drop or spray a couple drops of water on the shell that won’t come off
For shells that are really stuck on there I will keep putting a couple drops on it every few hours for a day or so that should rehidrate the shell and the membrane underneath and help it slip out of the shell
Also keep it mind it is completely fine and normal that the seedling pops a few inches out if the soil b4 the shell comes off.
As long as the shell comes off by the end off week 1 of sprouting out of the soil it should not damage the plant
Now if you leave the shell stuck on there for over a week it can cause stunted growth for a few weeks and even kill it sometimes if it doesn’t come off at all