It is either to much weight on your back foot or your front. Depending on whether the ski is doing a wheelie out of the turn or if the tip is diving in to hard will tell you which. Before changing settings make sure you are completing the turns by being balanced over both feet and using the front of the ski by not being too much on the back foot. see if that gets rid of the wiggle and good luck!

I feel like every time I start my turn on my off-side I tell myself "push hard with your front foot". maybe I'm thinking about it too much. I'll try to balance out my weight a little more and see what happens. Thanks guys!

Agreed with h20dawg.  I had taken a week and a half break from skiing after I never took more than 4 days off during the summer and my body somehow completely forgot how to turn.  I was either wheelieing very badly, or almost going out the front every turn.  I started thinking about reaching straight armed to the boat and counter-rotating more, and all of sudden I was turning correctly again.