Yea it could be just bad gas. (Insert immature snicker here)

I put some bad gas in my Toyota truck I had one time. It had a lot of water in the gas. Truck would sputter real bad. Some old timers said to run a bottle of rubbing alcohol through my tank along with the bad gas. The rubbing alcohol would help dry up the water in the gas. I did it and it actually helped it run better, no spitting and sputtering.