Sorry to hear about your troubles. Taking out the subframe is a bloody pain and I'm not lokking forward to mine but it has to go. I just looked at my new flywheel and it has no sideways movement at all. It rotates 2 or 3 degrees either way but very very little. More than a couple of degrees and it's toast for sure. The dmf is full of springs and my guess is that the ones you see are from inside there. I think I'm going to have to start swearing at mine, and swear I will, because the rain looks set to stay so I think I'm gonna have to bite the bullet and go for it too. Did you have any stuck bolts to free and did the driveshafts come out of the hubs easily?