If you look close, the player salutes the Marine when he gets in the end zone. Either the Marine took offense to a non-Marine saluting him, or he just isn't a Texas fan.
I don't think he salutes the Marine, he appears to raise his finger to his mouth to "shush" the crowd as he enters the endzone. You can see it more clearly in the video here
http://www.sportsgri...e-upset-marine/
According to one source:
"Finally, some information regarding the Marine who went berserk at Marquise Goodwin last Saturday in Texas’ win over Ole Miss.
For those who don’t remember, as Goodwin began to celebrate after a 69-yard touchdown run in the second quarter, he began to raise his finger toward his mouth, about to make the “shhh” motion.
That’s when Stephen Roberts, a Marine gunnery sergeant who served in Iraq, stepped in. Roberts got right in Goodwin’s face, hand on hips, and began screaming. As he tells
SB Nation, Roberts guessed Goodwin was directing the gesture at him.
“As he ran toward me, I could see him start to make the ‘shhhhh’ motion holding his hand up. I knew behind me was the Texas fan section, and he was staring straight ahead. So I’m thinking, well, I know he’s not ‘shhhh-ing’ his own people.
“It was hey, don’t hush me, because Marines, well … we don’t like to be hushed.”