quorn or just unfit?

i have not had the most active of weeks. but after eating 2 qtr pound quorn burgers in french bread rather than an evil chinese takeaway after the pub friday i have had the weekend from hell.
i would like to blame the quorn, as i have noticed similar stomach problems after eating their "fresh" sausages. however i have had no problems after eating the frozen sausages, which i have eaten for years.

actually i will blame the quorn. i mean, its not MY fault is it!