For the most part, Sheed missed a lot of wide open shots in his 3 for 42 run. Hard to defend, but it's hard to say all of those 42 shots were "forced". And, at 7 feet, when you say he's shooting with a "man in his face", it depends on who you mean. Not anyone can guard Rasheed at his height and have it matter. It's one of the reasons that plays are made for Pierce. Who can really guard him at his height?
Anyways, no it wasn't a mistake to bring him in, and considering he actually tried to post up last night as opposed to camp behind the arc all the time, I'm surprised you waited until now to ask this topic, cause last night was probably one of Rasheed's best games this season. For the most part, I think he's always brought it defensively. And he's definitely "fit in".