A radical innovator maybe? Pat was already a mastermind. This is surely a large change in his career, as well, but he's secure enough with his legacy to go with it. To me thats a significant achievement...someone with 40 years of experience, willing to change his ways.
Open source is most useful in the initial, but imperative, stages of the design process: ideating, generating many ideas, and prototyping. This sets a tone of collaboration and openness. I've found curating, editing, and choosing from all those ideas is a different challenge requiring different interactions. Then it really comes down to project leadership and open communication.
"The best way to have a good idea is to have lots of ideas." – Linus Pauling