Try an unflavoured gelatin that may give you another type of texture to your Buffalo. Cornstarch I think someone has already said - yeah try that or the gelatin - Be a Wingmaster and play around - and keep a pad and pen on you! Write it down!
Sounds like a job for xantham gum - but someone has already said Buffalo sauce is runny and very thin! Unless you plan to bottle the sauce try to keep it au natural