this is another reason why im not a big fan of tumblers. you are putting a lot of trust into someone. Its always wise to keep all transactions small and not start another one til the first one is completed. I have a feeling that the online wallet with bitcoin is gone. I hope not for those that have money invested, but I have seen the writing on the wall for weeks. If its true that its a scam, he must have waited til there was a lot of bitcoins and then vamoosed.