As a NYC bike commuter I can say that it certainly did spike up after the storm. Immediately after there was no subway from Brooklyn and there were about 10 times as many riders on the Manhattan bridge as normal. (And since the bridge has a climb you could easily tell the NOOBs from the experienced riders
) The avenues were a steady stream of cyclists downtown, a good thing as there were no traffic lights and it forced all cross traffic to fully stop. Imagine Manhattan with more bikes than cars. That's what it looked like, downtown at least.
During the next week the bike traffic leveled off but was still much higher than before. I've been counting riders on the bridge when I'm on the train for a few years now and usually 20-30 riders on the trip across is what I'd see, but last week it was more like 40-60, so basically double. Once the numbers get high I lose track too so maybe more. Transportation Alternatives is also keeping track and I'd be interested to see their numbers.
The only thing that'll stop that momentum will be this: "Winter is Coming" (I've turned into a Game of Thrones geek, and I've never before been into fantasy books or movies.)