The OPs posts in the signature campaign thread reflects that he doesn't want neotox to receive any funds at all, likely because neotox essentially has caused the account to be revealed as a sold account and eventually as an alt of puzzel.me
I think puzzel.me bought this account and the money he scammed from this account doesn't add up to the account's value.
I saw the pic. In it, he said "I am not interested in paying you anymore as I don't have enough money right now". So I think he might pay on or before May 15 but after you said he removed sig, I don't think he will pay.
he still have chance to save his 0.8btc worth account by repaying 0.25btc loan
after all the money he owes paid, he can sell the account easily for that amount
I guess he can't sell his account for 0.8BTC because like Quickseller said, he will get negative trust feedback as he is alt of puzzel.me.