This is probably the example level that got "Josh" "hired" into the team, but probably only because he was a friend of one of the devs (of nathan or terry maybe?). 

No info exists of this developer apart from this strange level and some other levels edited by him.

He might have been author of the rocket base map that's used as outro as it contained some specific elements of him, however he might have only edited a base of someone else or it was a joint work.

This Josh remains a mystery and to this day we don't know his full name and remains the only developer with that status apart from the mysterious Ben who did BANScripts...

...