He had negative trust for account selling so maybe he was not seen as a good CM by his bosses.
They put an archive link with your trust. Yes, it seems you didn't buy or sell an account but you offered escrow services. It seems people give that trust to you think it is same. Still, i find trust system absurd.
Exactly, you offered yourself as an escrow and with that you were involved.
https://bitcointalk.org/index.php?topic=3233304.msg33828602#msg33828602