You could mix like 1/4 strength recharge in pH water and spray it. Then put the dome on until either you or the plant removes the shell. I've lost seeds because of poor humidity levels initially
I'll give it a little bit more time before I perform surgery, but yes, I just put the dome back on. It looks like it stuck its leaf out a little more since I took the photo. We'll see how far it gets on its own.

For lighting.
ordinarily, it'z no big thing when some of the membrane remainz, but in this case, it'z got one of the bunnyear leavez folded over & glued to itz counterpart
which in turn meanz that the center core of the true leavez tryin to come out aren't gettin light...sooo, jus keep it misted to keep it moist & they may work themselvez apart...but u don't want em stayin like that for long, and ur most likely gonna hafta intervene in this instance to get em apart, with scissorz, a razor blade, whatever workz