Brett, here is a description of the east slope route:
http://calipidder.com/wp/2015/05/mount-morrison-12241-ft-via-the-east-slope/I've been to the start of the "difficulties" on the east slope and found it to be mostly class 2 (or class 3 if you lose the route).
I climbed the north ridge several years ago, but don't recommend it as a "hike"; class 3+.
