Zinging into Leinster House in a midnight blue velour jacket and a spotted green tie, Ryan Tubridy was clear on his message.  He is a man who loves a microphone, doesn’t have much of a head for finance or negotiation, respects the Oireachtas deeply and has been treated inhumanely over the past three weeks. Being publicly cancelled, he said, is not something he’d recommend.  In the long minutes before the Oireachtas Public Accounts Committee (PAC) began, Tubridy sat facing three rows of politicians who were studiously thumbing through the information pack he and his agent had sent through just that…