Well Oncolix listed him as an advisor on their website eventhough, technically, he no longer was. He didn't have a problem with it until he started getting pestered by people from the Oncolix ihub board. Once that happened, he wrote a letter to Oncolix asking them to take his name off their site.
At the end or the day, Chens involvement has no bearing on the outcome of Prolanta's success. He can't do anything special to effect the trials and as we know, Oncolix doesn't have any money to pay for his help either. If it goes to market, he banks, if it doesn't, he still made money up front.
IMO