The age old problem is not being able to see the image in Question and Diagnose a Correct Response, but being at work as I am now, what about the "TWIRL" function? For 180 degrees is should be OK although it will not work for the full 360.  As far as the image being longer than wide, you can always change the size of the Canvas so that both Match. But, Again, I am not looking at your image and may actually be off base about what I interpret you are wanting to do.
Sorry I can not be more Currently!!!

P.S. Also, what Version of Photoshop are you using???

I would rather be Politically Incorrect,
Then have Politically Correct-Incorrectness!!!