I have tried freezing corn on the cab and have never been happy with the result. It comes out mushy. I have frozen it in the husk after removing the silk and leaving the silk on. I have tried shucking it and blanching it. I have also tried shucking it and freezing it raw. We haven't been happy with any of them.
I alway cut if off the cob when I freeze it. I blanch it for 3 minutes an put it in ice water to cool it quickly. Then I cut it off the cob and put it in freezer bags. I just heat it and add butter to serve. The easiest way I have found to cut the corn off the cob is with an electric knife.