Quote from bushwacker:
Blublu, the interesting thing about that particular method of "Blast away the Wall" is that it's not even the FASTEST method since you have to wait a couple seconds for the rotating bridge to get into place... I knew about the trick at the time, yes, but figured it was too hard so I never tried. However, I explain in my comments the very fastest known method.
Any of you absolute legends still around? HMU! @Meader on twitter