I climbed Mt. Brewer via the East Ridge route (class 2) on 6 September 2009, and it was obvious that the true summit is approximately 100' to the west of the class 2 blocks on which the register is currently placed. I would rate the true summit block class 3+ (after free soloing it). I found it solid, easy, but completely exposed to a 25 foot fall (minimum).
There's a good picture of someone else downclimbing this block already attached to this page.
"Got tight last night on absinthe and did knife tricks. Great success shooting the knife into the piano. The woodworms are so bad and eat hell out of all furniture that you can always claim the woodworms did it."