There was indeed an incident of provocative sausage eating at the house of printer Christoph Froschauer on March 9, 1522, and it did lead to vehement debates which ultimately were resolved in favor of the reformators involved.

I'm not sure if your question aimed at ascertaining this historical fact, or was more philosophical, questioning whether this incident set off the reformation. Zwingli had been preaching reformed ideas for several years already, so it seems to me that the sausage eating was designed to create a confrontation (i.e. it was comparable more to the Woolworth sit in than to the Stonewall riots, if you think in terms of events "setting off" a movement).