Joined: Mar 2007
Posts: 9,204
Likes: 5,403
From: SF Bay Area, East bay
Bikes: Miyata 618 GT, Marinoni, Kestral 200, Soma double cross 2002 Trek 5200, KHS Flite, Koga Miyata, Schwinn Spitfire 5, Mondia Special, Univega Alpina, Miyata team Ti, Santa Cruz Highball, Waterford rs11
I've never seen a carbon seat post get frozen. My concern would be damage to the seat tube causing scoring that would transfer to your new post.