I flew the last SJC-SNA flight on Sunday 2/17 and that Sunday night flight is normally full but on this occassion there were only 39 people on board. However, it was President's Day weekend so I figured a lot of people were adjusting their schedules.
On Sunday 2/24 (same flight) I was greatly surprised that there were only 61 on board. This time I have no rationalization for that.
Whether these light loads will continue or not, I haven't a clue but I will say that I've enjoyed the extra room.