I would call it
passive assurance at best. BB usually he allows the competition in camp determine the roster spots.
IMO Moss and Welker are the only slam dunk, sure things, with Stallworth a virtual lock. Jackson will be hard to cut but may land on PUP or IR. That is 3 or 4 spots, only 1 or 2 left. It gets really crowded if Troy Brown comes back.
Gaffney, Caldwell & Washington seem to be fighting for the last spot(s), I wouldn't be surprised to see two of them get cut. If any of them can contribute of special teams it will go a long way to securing a roster spot.
I wish Reche would have caught the balls against Indy but maybe it was the straw that broke the camels back and forced the FO to critically review the WR core and make the off-season improvements.
Caldwell was brought in to be a #2 or #3, the fact that he had to be the number 1 speaks to how weak the 06 WRs were. He or Gaffney should be able to become good 3rd or 4th options and hopefully catch 30-45 passes next year. Caldwell is not my favorite WR of all time but I will give him props, he works hard and stepped up as the number 1 last year, he made some big catches down the stretch. Unfortunately he played his worst game on the biggest stage, but that is the way the cookie crumbles.