Yes, that is exactly what it is. It looks like your goggles are fogged, but it is actually that the anti fog stuff that Oakley treats their lenses with has gotten smeared. The more you rub it, the worse it will get. Asked a bunch of people I knew how to fix it and they all told me that I was SOL. A ski patroller reminded me about Cat Crap.
Google it and I'm sure you will find a way to buy it on line or local shops may carry it. I got some at Christy's in Vail. It's less than $5. Get it and follow the instructions I used. The key is patience, because it will seem like you are making it worse and then it will start to clear up.