A small update: Simon's profile at Xing is up again: https://www.xing.com/profile/Simon_Hausdorf#
He appears to be working on the "Bitcoin Payments Integration" for Amorelie.de, which is yet another online shop for sex toys. Amorelia is run by Sonoma Internet GmbH in Berlin, but the CEO is not Benjamin Schröder or anyone else that I would recognize.