Have you ever considered that the dev might not actually be named Dan Metcalf? The dev never actually proved that is him. The only proof was a Bitcointalk member claiming that a twitter account changed its name from Dan Metcalf to Matrixguru99.
Anything is possible but the coincidences of him having the username atcsecure when Dan Metcalf works for a company called ATC Corp? It's a pretty good chance he is.