If the sport of baseball were to implement an instant replay system, it would be firmly following the tradition of every other North American professional sports league. Every other league but baseball uses some form of instant replay to assure certain calls are correct. Baseball's move to something similar would be in line with that tradition.
No, instant replay cannot be reconciled with the tradition of the game of baseball. Instant replay attempts to remove the element of human error from a game involving humans. Yet human error is what makes the game memorable - whether it is a missed catch, a key walk or significant strikeout, or even a "bad" call made by an official. The use of instant replay overanalyzes the game and takes the fun out of it.