The server had a software-level outage on Monday, January 1st… unknown start time.
Here’s what happened:
The user related to Apache2 webserver and it’s permissions somehow got completely messed up.
Changing the username related to Apache so that it could access the web data once again resolved the issue.
Error messages were not displayed (except a redirect loop) because the 403 Forbidden page was even denied. (And, the forbidden page of the forbidden page of the forbidden page of the forbidden page *^2 = infinity was also denied)
How this happened exactly is still unclear. A chmod had been done prior to that day to restore what should have been the “default” permissions for that entire directory, and separate permissions applied to our HTML folder. This may have even been the result of an update — we are still very unsure.