It's nice that Griffin has admitted that he didn't exactly make the right call, and of course it's easy to say in hindsight, since we now know that he absolutely shredded his knee and could miss considerable time next season as he recovers.
I've already said (before Griffin got hurt) that I think the Redskins should have traded RG3 and rolled with Kirk Cousins. I also said that Shanahan completely blew it when he left Griffin in the game against the Seahawks.
Perhaps Griffin's revelation will force the Redskins to be a little smarter about the whole situation, and maybe they'll be a little more careful about the face of their franchise. If they don't learn this lesson soon, he could have a very short career. And that would be a shame.