which site say use the freezer? I have googled and none say ice or freezer.
PS. btw there is a site shown the person actually uses a hacksaw.
http://jennes1s.blogspot.com/2009/03/tutorial-removing-stuck-lense-filter.html
Site:
http://www.earthboundlight.com/phototips/filter-stuck-on-lens.html (Para 8)
Anecdotal:
http://photo.net/nikon-camera-forum/004vTD
http://forum.fourthirdsphoto.com/showthread.php?t=51588
http://community.the-digital-picture.com/photography_gear1/f/8/t/2495.aspx
http://www.flickr.com/groups/olympusesystem/discuss/72157616522478484/
And so on. Worked for me though. As I said, YMMV.