Reverse Entire flash movie?

Is it possible to completely reverse a flash movie so that it would play backwards (obviously not the sound but i can handle that)
You see i want to create a small animation about a guy who lives his entire life backwards. I’m planning to make one version of the story from His point of view, then reverse it and make another from the point of view of all the other people he meets. To save time I just want to be able to reverse the whole animation once i’ve made it and just resynch the sounds and stuff.

So, is it possible? if so, how easy/hard is it?