It happens, sometimes they crawl out of the egg with their yolk sac not fully absorbed, as long as you keep them on damp paper towels generally it absorbs without issue and closes up just fine. Really no need to take them to a veteranarian, if anything that may have put undue stress on an already stressed hatchling.
However, I personally wouldn't have put a hide or dish in the tub at that point either, it does look like it hung up on the hide and ripped the umbilicus out.
But I'm glad to hear that its eating already, definitely a looker, good luck!![]()