Mast twist

I recently acquired a 16' sailboat that was trailered to me from a location about 500 miles away. When I towed the sailboat home, I noticed that the mast did a lot of flexing on the area overhanging the rear of the boat. Later, when I was rigging, I observed that the sail channel was twisted as one looked down the length. Has anyone had a twisted mast? Is this from flexing on the trailer during transport? I don't know if the mast is not useable, but it sure looks screwy - especially the...

Mast twist