@ WhatsBitcoin, over all good advice but the question here is what debt is owed if anything. Gurrty was unable for a year to respond to why he thought he was owed anything.
He then responded with "Hello Scammer..."
If Gurrty would have been able to explain in a reasonable way why there was a debt owed it would have been repaid. However it seems that he does not want to talk this out and he wants to take a different path. Fine, let him do it.
Also why do you think he has such a strong legal case esp if you suspect lawyers will not take him seriously? You do not even know the foundation of this. Are you a lawyer? I highly doubt it. You should take the advice you gave smoothie and let Gurrty do what he will.