My orchid roots

[JLooker]

My fiancé bought me a phal orchid for my bday 4 days ago. Immediately I knew it had been over watered. I took the plastic pot out of the ceramic pot to find 2 inches of standing water in the bottom. I immediately dumped the watered and drained the plant as best as I could. Im waiting for it to dry out before watering and fertalizing the plant. It currently has 2 stems on it and is in bloom but the flowers are starting to die off too early in my opinion, prob due to it being week. Some of its roots we're already rotted, some are alive still. The arial roots all died except a few and a couple look shriveled. It obviously had lost a leaf and it looks like it may have gotten a mild form of crown rot around the area the leaf was lost. I'm assuming all this happened from over watering. What should I do to save it before its to late? Should I wait to repot it till all the flowers have fallen off or should I get it out of the wet medium it is in ASAP?