Okey here goes the story.. When Those levels entered TSF I wasn't ML yet. But these are my thoughts about it..

Jeh is the designer of the TSF levels and had DethMan as a beta tester. Project 2 needed some Good Costum levels and wadda ya know They Contacted DethMan of J2City and bingo ML levels added and some other goodies

Nope NewSpaz I didn't talk with Arjan that time.. I hardly knew him that time :P