A scenario I could see as possible:
Dylan arrives at Durango airport and texts his mom at 7:06 p.m. Sunday night. He isn't happy about spending any time with Dad for whatever reason(s) and ends the text to mom with the "scowling" emoticon. Dylan then asks Dad to drop him off at his friend's house, Dad says no, and tells Dylan that he isn't going to be going to the friends until Monday morning. Dylan texts his friends about the change in plans and then lays some attitude on Dad.
Dad stops at WalMart and Dylan walks around with him, grumpy and with more attitude. Dad stops at McDonald's for some dinner. Dylan continues having attitude. Dad is getting increasingly annoyed with Dylan's teenage attitude. At some point around 8:00 Dad takes Dylan's cell phone away from Dylan and breaks it and throws it away (maybe in a dumpster, out the truck window, etc.). Dylan goes into full on freakout mode.
The battle of wills becomes more of a physical altercation. From there, I think it just goes from bad to worse....
This scenario is my opinion only...