would a dui violate someone who is on parole. This occurred in Texas. This would be their 6th offense.

It depends on the PO, usually. Also, it depends on what the person is on parole for. If they're on parole for a felony DWI, my guess is a new DWI allegation would certainly violate them. It would probably be a big issue if he/she is on parole for a drug case, since the two are closely related. The biggest thing he/she needs to worry about at this point, is hiring the very best attorney they can to fight the DWI. If they win, they'll have a stronger argument before the Board of Pardons and Parole.