Originally Posted by Neil Pickup
The head must drop away to necessitate a high bowling arm because your lead arm is heading off-target, taking your upper body with it.
If you plotted a 3D graph of where your right hand went it would be heading in an arc down towards fine leg - even long leg somewhere. Your shoulder then opens out, and if you want that high bowling arm your head has to drop.
Contrast that to the alignment of Brett Lee's non-bowling arm in this video: DETAILED Brett Lee Bowling Action Slow mo. - YouTube
Cheers, Neil. Yeah I spent training today trying to keep my head up but my action felt awful and jerky. I'll try work in the front arm focus with that.