I just got a very cryptic e-mail from the organizer:
EDIT: We are going to be doing the ride on April Fool's Day. It has been decided that this was one of his favorite days and there will be organized rides with thousands of people all across the world in nearly every city
No other information, and I have no idea who "we" refers to. I was really looking forward to the ride, and I'm pretty disappointed that I found out today, after having already canceled some plans for Saturday to make time for the ride.