God damn I had this all written up then my browser went back for some reason...
Anyway...good post 6bee...
And he's right- there ARE options and it depends on what way you decide works best for you and suits you.
Um...you should try to have all three dimensions FAIRLY equally, not going to the extreme with any one of them- back, up, and in.
So, you need some extensor action...you need to keep the "string" (left arm) taught.
But at the same time, don't pull on that string so hard that it would break, or that you will pull yourself off to the right....if you know what I mean lol. You want to have extensor action but you also want to have rotation around a fairly stationary head. This will give you enough UP in your swing.
Then you need to make sure it goes up on
A plane. Straight up the turned shoulder with RFP (like David Toms), or the STT single/double shift swing (like Vijay- who is a double shifter BTW- if he came down the turned shoulder plane instead of shifting to the elbow plane on the downswing he would be a single shifter). Look here for pictures with plane lines drawn on them:
http://www.manzellagolfforum.com/forum/topic.asp?TOPIC_ID=1905&whichpage=1
Like 6bee mentioned, there's a few ways to do it. That's what TGM is all about, right? Options and classifying...
I LOVE that "taking the club back no further then a wall against your butt" thing BTW. Great image Brian...hadn't heard it b4.