You can't put full blame on Doc. It has to go upwards to the management as well. I think had they provided him with better players in certain areas as backups, not going bargain basement shopping, or waiting till the last minute to see what was available, Doc wouldn't have had to run Allen & more specifically Pierce into the ground. Would the Celts still have made the playoffs if he managed their time better? of course..they may have slipped to the 3rd seed, thus giving them homecourt for only the first round before they faced Orlando...but homecourt is important. The Celts felt they could win on the road, but everyone wants to play as many games in their own building as possible. Your rims, your court, your fans, less traveling from state to state.
You ca go on and on, give scenarios as to "what if things were done this way, etc." at the end of the day, the team did the best they could with what they had. Let them get better, make the roster moves they need to make over the summer & bring on 2009-2010.