Found this posted on Flightinfo by someone who claims to be a pilot at JB:
Now I work at JetBlue and we are being crucified because our management wants to explore this idea on 2 leg day trips to the west coast and back.
Heres the thread:
http://forums.flightinfo.com/showthr...t=51322&page=2
It appears that JB management fronted the idea of extending the flight time limits. Whether any of the line pilots had anything to do with it is unknown by me.