Okay, after 3 hours it's been resolved.
"It appears your script got hooked into the FastCGI handler somehow. I've corrected this and it should be working fine now."
Unsure how that happened... (or what that even means - LOL)
"I think the upgrade of Rails on Ruby today may have caused it. I'll be sure to go over the procedure so that it doesn't happen again." (whatever that means...)
