Not sure if its been found before.

Nice. I've never seen that before.

Nice
Can you continue the level normally after that though ? This game has a tendency to not like it when you skip stuff

Yes. You can continue to the helicopter keys. Saves over a minute if done fast

By the way there are some skips that I do in my run that are not in the record, like Stucky skip, or Car keys. They generally don't save a lot of time and are tricky to do, but that's something to look into if you're interested