The enemy is 1 inch from the tank, which is longer than it is wide, meaning for it to rotate behind the barricade it would touch the enemy. Can the tank rotate and move to tank shock or is it trapped?
This just happened to me in a game, where I wanted to tank shock a single enemy model away from the objective. We couldn't agree on a resolution so just rolled for it, but i'm curious to know what should have happened.
Here's a picture of the scenario.
(bottom of this picture is the table edge)