I may have missed it, having been out of the country most of the time since the takeover was announced, but I don't think the club have made any public announcement about the nature of Corney's continuing role. Having said that, the website does list Lemsagam as the Owner and Corney as the Chairman.
It was rumoured that he wanted to retain a role at the club, in name at least, to satisfy his US Visa requirements, and I'm sure Moisley said something about Lemsagam wanting advice from him for a transitional period, so it's no surprise to see him remaining on the board.
Given his absence from the scene when the takeover was announced though, I did think that might be more of a ceremonial role, with him providing telephone advice in return for his seat on the board. I was slightly surprised to see him in attendance on a freezing cold February night for a game against MK Dons.