Don't worry guys. Ice Lance will be changed to do more dmg than Frostbolt with some sort of proc that happens a lot. Otherwise you would never do anything but Frostbolt in PvE. We can't have that you silly geese.
As it stands, I think all the changes make Ice Lance do like 5 percent more damage per global, so it will still be worth it in PvE, but it won't be as ridiculous in PvP. So there's a good chance this scenario won't replay itself out in Mists of Pandaria, but we'll see.
And I don't want to get into too many specifics here, but Frost CC is actually mediocre in high-level 3v3 play. What's ridiculous about Frost Mages is the easy-to-do burst damage. The CC becomes less impressive as healers learn to manage their dispels better, especially in comparison to the CC Warlocks and even Hunters can do on a consistent basis.