This trade will never happen. Peter Angelos may be a moron, but he's not that stupid.
As for the people who'd be against this trade, one question. Why?
Miguel Tejada is an excellent fielder. He makes more errors, but he's got a lot of range, and a bullet arm. Also he could outhit Alex Gonzalez if he was swinging with a toothpick. Tejada is probably only slightly below Gonzalez defensively, and 20 X the player Gonzalez is offensively.
Money? You add two million more to the payroll for '06, and '07.
Prospects? Abe Alvarez isn't much of a prospect. He's probably a middle relief guy at his peak. Pedroia's good, but he's no Tejada. Plus, you get rid of Matt Clement and his albatrostic salary.
Attitude? I believe Tejada is angry because the Orioles aren't winning baseball games. Why would he have any problem in Boston? Throw in the fact that Manny, Ortiz, and Tejada are pretty close friends, and Miguel would fit well in Boston.
A pipe dream, though.