I feel your pain Tim.  I run into this now and again with just my wedges for some reason. First let me ask how's your grip pressure?  If you're strangling the club it can be harder to let that toe release and square up properly.  Check this first.

Then again, you may just be coming a little over the top and not keeping the lower body moving.  This is what I do when I start hitting hosel rockets.  What I do when I run into this problem is put an alignment stick on the outside of the ball.  Put it close enough to the ball that if you don't make center face contact, you'll hit the stick.  This will force you to hit it in the center or even toward the toe of the club, and you'll instantly know it if you hit it too close to the hosel.  Hit a bunch of balls like this until you get that feeling where you need to be at impact to make center contact.  It will click eventually and then you can take that feeling to the course.  

99.9 percent of golf swing faults are because one stands too close to the ball or is not balanced.

Tim,

When this happens to me I realize its a result of me trying to be overly careful and not doing a full turn.  This then causes me to swing mainly with my arms promoting an over the top swing and I catch it on the hozel.  Try a full back turn focusing on hitting the inside of the ball.

When I go thru this kind of thing, I get to the range and try to swing like Stricker from 100 or in. I take the hands and arms out of the equation and just focus on a shoulder turn and hitting the sweet spot over and over again until it just sticks. Like a robot.

Tim, we all fight this on occasion - generally, it's caused from trying to hit the ball with the hands and arms instead of letting the big muscles of the lower body do the work. Go hit a 20-25 balls with the feeling your arms and wrists are passive, almost as if they are in a cast. Another great visual is the drill from Mr. Hogan's Book on pages 82 and 83. Do that for a few minutes a day and your problem will go away, forever.

Thank you all for the advice, but I already fixed the problem before anyone replied! Thanks again though.

Looks like you got some good advice below, my suggestion is to try and focus on keeping your upper body as quite(still) as you can.  That should lead to a better more consistent swing and less movement resulting in hopefully less shanks.

Best of luck to you!

Tim,

Shanking the irons and wedge could be a result of a couple things:

1. Change in spine angle during the downswing (i.e. looking up, not keeping your head down)

2. A lower-body slide instead of a turn through the ball (which leaves the clubhead open, out of position)

3. Poor tempo / rhythm.

4. Too many swing thoughts!

Ways to fix this (at the range), include having someone stand aside you and hold a club and have the grip touching above your forehead while you swing.  This will train you to keep the head still.  

To fix the slide take an alignment stick and put it into the ground (pointing to the sky) next to your left foot and address the ball, then when you take the swing imagine that there is a wall there.  This will make you turn, fire the hips through, and make solid contact.  At your finish, make sure your belt buckle faces the target as well as the chest.

If you have poor tempo or rhythm, hit 10 balls in a row at 75% being sure to take a low,slow, elongated backswing, being sure to accelerate through the ball with a low finish (similar to the swing of a  "knockdown"  shot).  This will teach you the importance of good contact and give you a better chance of hitting the sweet spot.

Also, on the tempo and rhythm note, you can fix your tempo/ rhythm by the way you behave when you practice.  Don't simply hit balls, hit golf shots with a purpose and a target.  Practice with your preshot routine in between every shot.  This will make you relax and to focus on your shot.

If you have any more than one swing thought, that's too many.  

Hope this helps. Fairways and greens.

Chris H