Moving Light Switch from the right side of my door to the left. Cold air ducts seem to the in the way. Ideas?

This album should explain my situation clearly!

I would like to relocate the existing light switch from the right side of my utility room door, to the left side of the same door.
I am doing this to remove the electrical cable going to the light switch from the joist it is currently stapled to. This cable is a possible element of interference for the large number of cat6 network cables I will be running on in.

The side of the door where I want to move the power switch looks to have some kind of sheet metal ducting at the top of the stud wall.

I am just unsure of what the proper way to do this would be.

Please view the imgur album for a clear understanding of what I am up against

Thank you for your time!