Don't want to have to remove the positive trust from a while ago 
If your feedback in the past is due to the successful deal then there’s no need to delete it because it’s backed by successful transactions worthy of positive feedback. Let the new negative feed do their work on giving warning to other user that will potentially have deals with the user. That’s why you should only give positive trust to user that shows trust worthy act and he deserves that during the time of your deal.
Yeah I guess that makes sense, I've never had a negative experience with the guy when dealing with him, so I guess that's the only conception I have of him. Also, the fact that he's still here and trying to right whatever happened is a good sign, imo. Usually scammers will just take the money and dip. Given that he's done a lot of business on these forums, I'd be surprised if he left after this one deal if he really was trying to scam.
I don't really know what the phone/hacker/thief story is about, but what's the proper thing to do if Heisenberg63 ends up paying back the OP? Like is he cleared as a scammer, should we leave default trust, etc.?
Thought to share update.
@ Heisenberg63 had reached out to me on private message and said he would like to split the loss.
He want to split my loss as 50-50, of course it doesn’t do me good as I still do loose money.
I still told him that I am happy to split loss for $100 CAD of $415 CAD is Paid but I requested him to pay me $315 CAD back. Still waiting to hear from him since.