flightline, you may want to brush up on Boyle's Law:
http://www.grc.nasa.gov/WWW/k-12/airplane/boyle.html
Since you use "flightline" for your screen name, I used NASA's website for the example link.
I'd guess setback such as depicted in the OP's photo might increase pressure by 50%. I definitely would not "doubt it would have damaged anything."
Actually, I wouldn't be surprised if it would have damaged someone, let alone something.