Righto, my torx drivers and leverage tools arrived so I got stuck into it today. Not such a hard job, the trickiest bit is getting the flex cable plugged in. I took some pictures:

In this pic look at the bottom right and you should see a tiny piece of curved metal. I think it should be stuck on with melted plastic, like how the stylus spring and that larger metal piece is. Now I've got the phone back together and am typing this I'm thinking I could have re-stuck the friction device with a dab of superglue.



Here is a picture with the friction device removed. The stylus is held in with that flat piece of metal running across - you can see the bent section at the pointy end - this clips into the stylus where there's a groove down near the pointy end.



The stylus is slightly looser now. I've actually taken the phone apart twice now - I took that friction device out and forgot I didn't have a photo with it in place so I put it back in. Took the photo and promply put the rest of the phone back together.... Next time around it only took a minute to take it apart so I may just try the superglue trick on it yet!