Namaste sjr,
thank you for the post.
interestinly enough, the words of the texts aren't all that important... well... they are important, however, they are not "gospel".
now, of course, there are schools that do hold the words written down to be the sum total of the teachings. this is not a view that the Mahayana schools happen to share.
this debate is rather similar to the debate between the Catholic and Protestant chrisitan movements, and from that point of view, is quite fascinating.
in the final analysis, however, the words are simply guides pointing the way.