To roast the corn, thaw frozen corn and toss with 2 tablespoons extra virgin olive oil. Roast in a 450 degree oven for about 20 minutes, with some kernels becoming light golden brown. Remove from oven and cool. In a large bowl, combine all of the ingredients with the roasted corn.
For the dressing, combine all dressing incredients and whisk together. Toss above salsa mixture with dressing. To prevent the avocados from discoloring dip in dressing mixture immediately after chopping.