Yes. it can be done - requires some skill, luck, and patience. A bushing will be more of a challenge because of the thick wall. I haven't had a lot of sucess with heat (I usually burn the crap out of the fitting). Two other ways you can go.
Cut the bushing off flush with the top of the fitting. Take a hacksaw blade and cut thru the inside of the bushing just to the fitting in about 8-10 spots. (if you used purple primer like you should have, its easy to tell when you're deep enough. If you didn't use primer. its harder to tell the right depth, but the bushing will come out easier ) Drive a skinny blade down the glue joint to chip the pieces out - be careful not to pry back and break the fitting. A hose clamp around the outside can help prevent that.
Other method is a 2 3/8" hole saw and hog out the bushing. You'll need to plug the bushing so you have a center for the pilot drill. This works well, just be careful to go slow as the friction heat from the bit can melt the fitting you're trying to save. Use primer and lots of glue afterwards. If the fitting ends up looking really ugly, epoxy will save almost anything.
I do lots of these kind of repairs and the secret is to go slow and take your time. Good luck & HTH.
Jim
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