And this absolves MyCryptoMixer how? You're apparently just throwing dirt on this person for no actual reason other than to discredit them. Why would you do that?

The coins still haven't moved. I don't know how Letters of Guarantee work exactly, but I personally would have waited to download that before sending any coins anywhere. Anyway, not much to do one way or the other besides wait to see who actually has the coins (if anyone).