Anyone have any insight as to what happened on UAL 490 DEN-DFW, (735) on Thursday (the 27th?) Paramedics, police and about 15 airport 'badge types' proceeded on to the plane. Several groups got off the plane 20 minutes after everyone else. One women in tears, another guys arm was sore. Flight attendant's hand was swollen. Stretcher came off, empty. Police escorted an individual off the plane in handcuffs while he was screaming "gracias! gracias!". I'm guessing a scuffle in the air and the chap had to be restrained. Anyone know why? Curious folks want to know. (The flight was also on the ground 5 minutes early, and normally the flight is never early.. priority clearance?) Matthew