And now people is coming back and invest in it 
And you're stupid enough to believe that's the case. Either those numbers are fake or the siteowner himself invested to deceive you again.
I don't think so, he hasn't touched bitcointalk in weeks and i just put in .1btc and cashed .15btc soon after
does anyone know if the nonce problem is fixed though?
For the record he still owes me 2.34BTC
Well, that's what you think. If you're going to get scammed again you deserve it I guess. I would never invest in a site again that made my investment dissappear in such "magical" way. He can let you invest divest for now, so his site gains trust, until the next moment he comes and takes your btc