Free has been pretty good and probably better than Columbo. The sack was not his fault but just a good blitz package by SD that fooled Romo - the LB that sacked him was unaccounted for in the protection schemes.
Free is a natural LT and should replace Flo next year. Flo and his penalties need to hit the highway. I wouldn't mind trading him to a team needing an LT if he still wanted to play as he is not bad. I just want an OL that is more mobile and makes less mistakes.
Bigg should be moved to RT.
We then need to find ourselves a new RG in draft/FA.
I think Bigg is just too big and tall to play guard. He is a perfect RT, though. If we find ourselves a power RG with some decent speed, we've got a power side of the line to run on.
With Free and Kosier on the left, we've got two guys who can get out and make blocks in space (Gurode can do this,too. Hopefully the new RG can do this, too).