Most snakes are pretty good escape artists in my experience but corns are probably more so than some. As to wiggly, that depends on the age and the individual temperament of the snake. Two year olds or older do tend to be much calmer and slower moving than younger snakes. All colubrids tend to be faster moving than most boa and python species but if you have a hognose, you know that. Many corns are no more wiggly than a hog, though they can move faster. One of my adult corns that I bring to expos for people to hold, I can hold him in my hands for hours in a busy expo and he barely moves. Thankfully all of his babies also seem to get his temperament too and are chill even as hatchlings. I've kept back two of his daughters, one an '15 and one a '17 hatch.