Bill-
Pure speculation on my part...
On RG, I think he basically threw the gauntlet down for Preston. He publicly challenged him to get better, Take a big stride, as he put it. Preston will be the starting RG this year and he will have to improve.
On LG, basically, I think Gandy is gone. Also, Marv later used the example of a G when discussing free agency generally. We are going after a LG, either Steinbach or Diehlman. My guess is Diehlman as he was, I believe, a John Butler/AJ Smith pick and Marv respects their evaluation skills tremendously.
On RT, I agree, no endorsement of Pennington. Although he kind of threw down the gauntlet a bit, I think he hedged with the RFA issue. He said there's a couple of RFAs we like. Max Starks perhaps??
Just my thoughts.