I have had similar experiences but never with Cherry MX switch. My case was with leaf springs in APC membrane, all it took were just tweezers and comparing against a normal leaf spring so that one can sort of bend it back the way it was.
Failing that I would just swap the faulty spring with a key that is not so heavily used. For me, the keys that I could play with were mostly right {Ctrl,Alt} along with Scroll Lock. That way I won't have to worry too much about hitting a faulty spring which causes undesired effects.
In my case with APC membrane, I had a few bent leaf springs (in various ways) so I decided to get handy with a pair to tweezers. Comparing one by one and bending them back into shape plus testing to make sure the keys do not stick or fails to rebounce (as the "fingers" on the leaf springs in my case gets caught in the helical spring). For the rest of the ones that were still faulty every now and then (even after trying to bend them back into shape only to see they do not work properly), I swapped them on hardly used keys.
Worst case scenario is to order some replacements, at least for Cherry MX they are still being manufactured. In my case with rare(r) springs I have to make do with whatever option seems to be the most viable.
