As Lili mentioned, I think you're giving him too much credit. Unless he a genius mastermind who's been pulling an act for over a decade, chances are he simply took advantage of the situation and touched the princess.
I'd be very disapointed with that kind of plot twist as it would either mean that oda completely changed the personallity of VD (making him an evil genius in one scene and a complete idiot in the other) or hidden his true nature from us.
What would be most interesting to me is if it was someone else with ulterior motives, someone other then Hoddy. The vilains look a bit underpowered for the SH (even though it's normal for any manga after a time skip to make their hero look way stronger), so it'd be great to have a mastermind behind everything that's happening and the murder of the queen.