pulling irons?

[J_Bone]

YUP. now that we put all put in all possible causes, how to fix.

If he is as stubborn as Saint says, try to give a small and easy adjustment. Check his grip. Try weakening his grip (counter clock wise around the shaft). If his grip is strong, go neutral. If neutral, go weak to open up club face. It's not a swing fix, but a end result tweak to help him get consistent, if he always has that swing. That is the thing with Golf. Be consistent and use small adjustments to get that consistency to where you want the ball to go.

[Saint]

It's kind of funny, because it really doesn't look like he has an inside to out, it might be slightly i guess.

[itzzzberny]

for the fastest solution.... try using the stickies...
http://thesandtrap.com/forum/showthread.php?t=21584

[MuscleBack Sauce]

you're probably doing what i do which is come over the top (which tends to happen to a lot of us amateurs when we swing harder). try to feel swinging the club with your left hand. Many people swing with their arms trying to hit the ball with their right hand as opposed to turning through the ball on axis

[Where's the Cart Girl?]

For me the fix is tempo. When it's consecutive pulls, the first thing I try is to really focus on tempo. 1...2, 1...2, 1...2. I'll count it in my head 2 or 3 times as I stand over the ball before the swing. For me it's a product of my hands and hips getting out of sync or my shoulder turn getting sloppy. But it's almost always a pull.

Just dealt with this today actually. Kudos to my dad for diagnosing it over the phone because he knows my swing better than I do.