I removed the screws and washers from the peek clamp bracket.  Washers were not reachable, but I was able to push them to a place where they dropped into a temporary foil shield I installed under the top mass.

Keita and I then removed the peek clamp and bracket by lifting it from the bottom and hooking it from the top with a dental pick.

Cable connectors were threaded from the top down, past the blade spring on the -Y side, with the orientation defined in D0901880-v5, while cables were held out of the way on the other side of the "H" slot in D1200469-v1.

Pictures:

P1030993 - peek clamp and bracket
P1030995 - bracket screw removed - loose washer remains
P1030997 - fishing for the peek bracket
P1030999 - bracket caught
P1050005 - "H" slot as seen from below before threading cables
P1050006 - "H" slot as seen from above before threading cables
P1050009 - "H" slot as seen from below after threading cables
P1050011 - "H" slot as seen from below after threading cables
P1050020 - cable connector seen from the side, as it just fits through 
                      the "H" slot around the blade spring (-Y side, left in this picture)