In so doing, it will aid in bringing about a reformation. Those Muslims who seek liberty, who either flee from their lands to find it, or hope for it while living under the boot of tyranny (as millions in Iraq have done and are now showing) will realize that a reformation is in order. At least that is the theory.
If Bush's comment was made at this level...that comment not being so much for our consumption as a philosophical gauntlet and study in opposites laid down for the Muslims themselves...then it was mastrerfully and subtley done. A gauntlet for the tyrants themselves, and a not so subtle message towards reform to the masses living under them.
Considering the fact, however, that GW has never chastised the American Muslims for their reluctance to condemn terrorist acts, I find it hard to elevate this to such loft heights.
It strikes me as more pandering to the "religion of peace".