Nobody knows what was pissing him off at the moment so maybe its not big deal. Upset about who knows what, he's a kid, tweeted something.
Now with that said, I don't feel bad for Johnny Football. "Please please walk a day in my shoes", hey JOHNNY, STFU!!! You get tickets to the super bowl, NBA finals game, court side seats at sporting events, just on ESPN First Take, Your going to be a millionaire in a yr. Yea, I would love to have your problems. I presume A&M has given you help on how to deal with media, public, being a celebrity. Doesn't sound like you listened.
Now a word or 2 about twitter, I have a twitter account. Have over 3400 tweets. There have been times I typed something that was pissing me off, whether it was sparty related, M vs MSU, politics, etc, I would take a take deep breath, think before I tweeted it. As an adult working in a HS athletic dept., I know I have to watch what I tweet.