Since you now perceive that the problem has gone, it's kind of like lifting the lid off a saucepan filled with reactions. Emotions that you were bottling up and didn't seem to be resolveable. All the feelings you werehaving in the midst of real-seeming problems, worries, fears, guilts etc, suddenly come flying up into awareness for release. The foundation and purpose of them is gone, so there's nothing to keep them in place.
I've seen this happen in myself countless times. Once the psychological perception that you have a real problem is lifted, the reactions to believing the problem was real suddenly have no "ceiling" to stop them flooding out. So on comes the catharsis.
Going through this right now, following my recent intense forgiveness and atonement about an event from many years ago. Even though the experience of the atonement was filled with innocence and truth, and even though it unlocked something in my mind and changed my perception forever, up now comes a large volume of emotinal baggage which is "no longer relevant". So it's kind of like flushing the toilet.
Light goes in (you eat light), you process it, darkness comes out the other end (shit).
As usual I did not really know what was bugging me until Jesus clued me in that this was happening. So it was time to fetch the tissues.
And then it became a great excus for some ice cream!