TP to Mr. October. That's pretty much is exactly how I feel, what I think. I've made other post about this. That is, this team just some how seems to "not" take advantage of it's best opportunities when they are there for the "taking". They either, as you say, throw up jumpers that aren't going in, get kind of complacent on D, or also as you say, stop doing what was working for them. Rondo even said as much in one interview. He said, "when we get leads we kind of stop doing what got us those leads...".
It's a trait of this team that is really tough to deal with as a fan. They dominate and then give it all back over and over again.
Examples:
1. Game seven of the 2010 finals. I know, I know, "but the refs..." How about, you have a 16 point lead with about 14 minutes to go to win a world championship. Get bloody, go head long for the rim, figure out, somehow, some way to seal the win, having a 16 point lead. C'mon...
2. I think it was 2010 also, we're rolling along down the stretch with home court advantage over everyone. And then, in about a two week stretch it's like we checked out, losing home court advantage to the top 4 to 5 teams we most likley would have to go through to win a ring. And a fair share of those losses were to cellar dwellar teams. Would have been really awsome to have had the home court for games 6 and 7 against the Lakers in 2010 but we "gave" it away.
3. Bosh goes down, you'd think we'd be licking our chops knowing if we close out Philly quick, we can get some much needed rest. Game 2, we come out with the second worst playoff performance in Celtics history. Philly ties the series 1-1.
4. Game 4 against Philly, 18 point lead in the 3rd, with an opp to go up 3-1 heading back to Boston for game 5, close and get rest...lose.
5. 15 point lead against Miami in game 2 with three minutes to go in the half. Instead of executing and stretching it to 20 and sticking our foot in their teeth, we make a series of bone headed plays on offense and defense - 7 point half time lead...
I love the team. I know the refs gave us some bad calls - but the above games were ours to take -but we gave them back. WE get lackadaisical, uninterested.
If your jumpers aren't going in, go head long for the rim. We never do that, we keep taking the jumpers.
You have to attack, attack, attack.