IHe earned it back by (remarkably given the circumstances) playing at a very high level and prompting the Eagles to award him a lucrative contract.
But to lose two years of your life, especially when you're in a field where you aren't promised anything but the next play and you don't have very long to earn money, is a severe penalty. He had his contract voided, and the Falcons went after him for more money.
I'm sorry that my rationality pisses off some people who want to hyperbolize about how awful he is, but he was punished to the full extent of the law. It's not like he got off easy because he was famous; he got pretty much the most punitive sentence associated with the laws in question. There is no 20 year sentence for the crimes in question. Get over it.
And again, not everyone is a dog lover. Some people find them annoying, loud, slobbering flea bags who crap everywhere and destroy stuff. Culturally, some folks grow up in communities where dogs have had a more sinister significance, and that's definitely true in Black communities in the South. Would be be a monster if he had managed a bug fighting ring? In some Asian cultures, people watch bug fighting and place bets. What about cock fighting? Would the elicit the same response? Hell, what if he was commissioner of the NFL and he oversaw a league that left human beings battered, broken, and used up for our entertainment? There is a lot more relativity here than dog lovers seem to understand. He was found guilty of a crime and punished to the fullest extent of the law, a punishment that was especially punitive given his profession. Why is that not enough?
Finally, I'm happy to live in a country in which punishment isn't simply about revenge, but also about rehabilitation. The man served his time, has gone above and beyond to speak on behalf of the ASPCA, and has kept his nose clean. If he wants to have a dog, I'm happy to live in a country that doesn't feel the need to regulate the life of someone who's not in jail or on parole/probation.