Spirit of law should be in game as the infamous call made by the first base umpire Jim Joyce but the game is still continue and not over until the rules should be changed. If Galarraga goes into history then the game would bec changed.
Jim Joyce wrong call
It would be a fine variation of what Lee MacPhail, then the American League president, did with the Pine Tar Game, Yankees-Royals back in the 80s. George Brett did hit a home run with a bat that had too much pine tar on it. Technically, the umpires were right to basically take what turned out to be a game-winning home run from Brett out of the stands.
A perfect picture at the end of an imperfect ending in an imperfect sport. A snapshot of the old Kipling line about keeping your head while all those around you are losing theirs.