This has happened before. About a year ago I got violently sick after eating one of their frozen pizzas, but wasn't sure it was their food or not. This time it's more an a coincidence.
I have been buying only this brand since moving away from Chicago and missing "real" pizza. Little did I know it was "real" poison. I spent the better part of the night, starting around 3am, "worshipping the porcelain god".
I will never again buy one of their products - fresh or frozen.