wilting and shrinkage

My plants flowers seem to have lost their puffyness and overall healthy look. This happened overnight. She is in a DWC. The other morn, i went into her room, and she had fallen on her side, but not out of solution. I changed the air bubbler, because it seemed like there was a prob with that. Could the lack of air to the roots for one night have caused this to happen? It did not happen the same day the plant tipped but 2 day cycles later. Is there a way to fix this problem? Should i flush, and harvest early. The flowers feel limp,and slightly mushy, but not showing any mold signs. Thank you for any and all help or suggestions.

Root rot?
How's your root ball look? How's it SMELL?
How large is the plant and how large is the reservoir?

Yep......lack of air to the roots for one night certainly could do that........and sounds like it did. Roots need to breathe just as much as we do or they'll drown. Sounds like that's what happened there. Sorry.