Perhaps, but most muslims are waiting on the sidelines to see who will win. (Remember the joke, "What you mean WE Kemo Sabe?") What is really needed is for muslims to support this position and back it up with support for the war in Iraq. If you are going to be against terrorism, you need to go all out against it, this is why Kerry's half hearted attempt to be against terror is going to fall on deaf ears in the electorate.
Don't forget that a speach such as this could also be good cover for terror activities. Find out where they really stand by looking at their actions. Holding a rally is a good action, raising money for the war effort is better, urging muslims to vote for Bush is a good idea, at what point will this fine example stop?