Is that on the checklist?

An Air India Express co-pilot adjusted his seat while the Pilot was in the restroom.
As he made his adjustment, he jarred a control and sent the 737 into a 26 degree 7000ft plunge that would have torn the airframe apart if not stopped.
To make things worse, the co-pilot panicked and failed to regain control.
The pilot managed to zip it up and use his emergency code to get back into the cockpit and pull the plane out of its dive.

Someone is going to be sent back to the simulator for emergency procedures review.