Yes, it's pretty clear funds aren't dirty, and the exchange should return the funds. Noticed they were last active on August 3; I am waiting for them to become online. So they could notice their flags.
I got the impression that they appeared on August 3 under pressure from Bestchange, because they were removed from the search on their aggregator. After they left a comment in the scam accusation thread, BC reactivated them. It was obviously important that they formally show interest in solving this case.