When I purchased my house, one of the bedroom ceilings had previously been repaired due to roof leakage. The ceiling has a 'popcorn' finish and the repair area...well it was just done poorly. The area is approx. 3' X 5' and the repair is 3/8" thicker than the original finish. Can I wet this area (moderately) and scrape the previous repair off and try to blend it in a little better? My fear is that the drywall either is pretty beat up or will be by the time I'm finished that I will wind up having to take all the texture off, repair the drywall and then respray the 'popcorn'. Any comments would be appreciated.

Thanks,
JES