Skinks or lizards who get caught in sticky traps are easy to get off.
Cut around the sticky stuff as close to lizard as you can, then put vegetable oil (peanut, olive etc) on lizard and it dissolves the sticky stuff.
Then wipe lizard as best you can, then wash it in soapy water.
Finally dry the lizard and put talcum powder on it to remove any residual tendency to be sticky.
Let it go. They survive this.