Yes the address is as you mentioned:
16u1VqPgTnGrAXQreLFBbVoUkgaATeHXKA
That's something!
I'll try to install the electrum software (probably takes 200GB to download the block chain again right?)
No, just a few MB.
Sure it can...
True, but I meant the part where his 2.8 Bitcoin went from confirmed to pending.
That part I don't get.I think I get what you mean: someone else is broadcasting HIS outgoing transaction so that 2.8 is CHANGE from the 2.9 Bitcoin he had in his wallet. Correct?
If that's the case, I still don't understand why it doesn't show up on block explorers.