The funny thing about his longest way around Black Mesa comment is that according to Opposing Force, the area he got to just now with the tank was behind the Secure Access door at the end of the dam in the beginning of Surface Tension (next to the cannon).
/offtopic
Is there any reason to require a password with a mixture of character types here? I like having the ability to enter a crappy password for non-essential website accounts; though I entered a fairly crap one I wanted a crappier one.