Hey not a bad start to a page about this route but it's not the East face - I just checked the map again to confirm, but the face is clearly NE or N - nowhere close to E.
The BAC guidebook titles it "North-Northeast Face (Dreieselwand)" which I think is the most accurate.
Also little nitpick but change "crevass at the start..." to "bergshrund at the start..." although it's obvious what you mean either way.