That looks like a movement offset. While it might be in the file, it looks more like the head skipped a step in the left and right movement. This can be due to the head hitting something or due to dirty rails or a belt pully or belt tooth with debris in it. Have you wiped down the rails recently?
I would email Glowforge support. Note that it can take up to a week to get a response. Show them all the photos you have and list specifically what steps you have taken to address the behavior and specifically which parts you have inspected and what that inspection has revealed. Be specific! This will help them get a plan of action for you.