Yeah that happened to my poor Suri. She had stuck shed at some point because her toes are all weird looking. She still hasn't shed since I have had her though. How often do adults shed? Should I be worried?
I just felt bad for the little guy because his dead skin was all in his face and it was obviously bothering him. I made sure to check that all of the skin was ready to come off before I helped him though. It was all loose and wrinkly, and parts of it were cracked like an eggshell, where the dead skin has stretched and split. How long should a full shed take? He didn't eat last night, I assume because of the shed. Will he eat tonight? Just wondering.
You can help your leo shed, it sounds like he needed the help. I notice mine will generally eat less the couple days up to a shed, and appear much duller than normal, then after about 3 days they go white, and a couple hours later they are all bright and shiny and new.
Some leos take an hour or two after going white to shed, some take a little longer. If any of mine still have shed skin stuck somewhere (usually the toes) after 24 hours, I put them in a container with warm moist sphagnum moss (you can use damp paper towels instead; moist vermiculite can be used, but for adults only-babies could eat it, rare, but why take the risk?).
I leave them in there for about 1/2 hour, then try to help peel the shed skin off w/tweezers (Athena goes through this routine pretty much every time she sheds- she's lost the ends of all but 4 toes due to improper keeping a the pet store (no humid hide)). If the skin doesn't come off easily, I'll put them back in the container w/the moss for another 1/2 hour and try again. Usually that's all they need help with. My two little guys have so far never had any shedding issues.
Some leos won't eat around shedding time, some (like Sprocket) eat up until the skin comes off, then they eat the skin. It's normal for them not to eat insects during and up to a shed. I wouldn't worry if he eats tonight or not, but feed him any way- if he goes a couple days with out eating after the shed is complete, then I might worry a little, but keep trying.