A long, long time ago now, my LBS made such a hash of removing a seized in B/B that they ended up cutting the shell with a hacksaw and peeling it back. It achieved the aim, I guess, of getting the B/B out.
I was given a warranty replacement frame but bought the knackered one back from the dealer for £10 and then took it to a local framebuilder to have a new one brazed in and a respray.
I was at the time a little upset...
Terry...