[V8] V8 Headliner

[Les Dane]

Headliner has been descending in graceful folds; the rubber backing is toast.  I took the car to a local upholstery shop (auto and marine), and the technician couldn't fix it (the only job in seven years he hasn't been able to complete).
It seems that the fibrglass form had been attached with a very strong glue, and he couldn't get it off.
Is this standard Audi, or the result of previous work?  Perhaps someone working on the sunroof?
It seems that the form can't come out except maybe in pieces.
So is it possible to find a headliner form?
Or defeat the glue?
Suggestions?

(Les:)

90 V9, 218k