What could have been a routine traffic stop ended with the driver hospitalized with arm injuries from a police dog unleashed when he refused to exit his car or provide his full name or identification.Ronald D. Wagner II, who was taken into custody Sunday, captured the incident on and posted it on his Facebook account.It shows an Ohio Highway Patrol trooper and then three Canton police officers calmly and repeatedly asking the 45-year-old Perry Township man to provide identifying information and vehicle registration. The trooper had pulled Wagner over because the vehicle he was driving had only a homemade license plate on the back.The encounter lasted more than 20 minutes before police eventually lost their patience amid Wagner’s contentions that it was an unlawful stop and that a driver’s license and plate aren’t required for him to drive.