To me, I'm sure Ray Allen his PR team thought of the fans backlash - hence, his message in the Boston Globe.
Fixed that for you.
Sorry, but that ad is Crisis Management PR 101.
Yeah it's one thing to do it when the TEAM got rid of you (a la Nate McMillan) but doing it when YOU leave the team should probably be standard operating procedure (especially with circumstances like this e.g. rivalry, rejected side offered more money etc.)
For what it's worth, let's call a spade a spade, here.
For all of us throwing Ray Allen (and his legacy) under the bus, let's not forget that our own white horse, our own "savior", our own Mr. Intensity......
...Wouldn't have even come to BOS if not for the man that many of us hate right now.
He even considered - The Lakers.
Think about that for a minute.
He just didn't think that BOS had enough in an unknown quantity of Paul Pierce and Rajon Rondo to even sniff BOS.
And I love the guy to this day.
But we have to look at fault in ALL players.
It took Danny trading away our 5th pick in 07-08 (Jeff Green), and Delonte West in order for us to acquire Ray Allen. It was after THAT that KG thought we may have enough.
Ray Allen.
The man some of us hate right now.
The man who got a reluctant KG to come here.
The man who played with bone spurs in his ankles throughout the playoffs.
The man who, even as a child, LOVED BOS:

Strangely enough, Young Ray Allen was even MORE of a Celtics Fan than even our OWN Captain - who admittedly LOVED the Lakers as a young man.
Food for thought.