I think he was merely referring to the fact that it wasn't a continuous boogie, but with interludes and tempo changes. Part of the wonder of boogie comes from the sheer stamina and technique to keep up a pounding beat without stopping.
I guess only playing in 'C' and not reading makes him a natural candidate for the arranger, though! (Where's that damn smilie for 'tongue in cheek' again?
And how about a shout out for Pinetop Smith and Meade Lux Lewis, who never had arrangers, and played in other keys (and weren't white), but at least were some of the founding fathers of the style...