I commented on this in a different FanPost, but consider that:
1) The statement in this title is often shortened to "..In hindsight"
2) Joe was an English major at Brown
Joe is the kind of person that really picks and chooses his words, and this makes sense because he was an English major. Therefore, it's important to realize what he actually meant with his statement. When you shorten the statement to just "in hindsight," it has completely different implications than "with the benefit of hindsight." For one, "in hindsight" implies previous knowledge of whatever happened and some kind of mistake in decision-making. More than that, it implies some kind of compliance with whatever happened and complacency.
"With the benefit of hindsight" implies knowledge gained after the fact -- or, pretty much the same reaction we all had to the Jerry Sandusky news. I'm not saying anything in regards to Joe's actual innocence or truth of the statement itself (although I do believe he did what he thought was right) but the way Joe phrased his statement is important. Too often in the media, this statement is shortened to "in hindsight." It's not hard to understand why the media at large would do that -- it allows Joe to have prior knowledge of what JS did and allow for a cover-up.