Howzit Dean - its not the material that gets stuffed, its the spongy backing that gets ruined which causes it to separate/sag. Can't be glued back... glue will just soak through.
Out of interest - BMW MIIIIGHT be able to supply a new hood lining (complete) at approx R4.5k - i placed an order a while ago and still waiting. However, i saw on Ebay that the exact anthracite hood lining material can be bought... if you keen on going halvies, we should try bringing a roll in!?