I was hoping that maybe the lower scores were all in the verbal or nonverbal subtests so the entire verbal or nonverbal sections could be dropped using one of those alternate means of calculating a composite IQ. It probably would be good to see if they would give you the breakdown for the nonverbal subtests to see if it is a consistent weakness in working memory, for instance, or just the verbal working memory.
I have some more info on what each of the subtests looks at at home. I'll try to find some time when I'm home this evening to post more info on that.