Rewind transistions instead of playin out!

Hi Guys ive search for some tuts on transistions
i found this
[Click Here]
but i was wondering if instead of making a complete PLAYOUT part i could just have a rewind frames option!!

so what i mean is!!

instead of having frame

1-10 - play in
11- stop
12-22 - play out

i could just have
1-10 - play in
11 - stop

this would decrease my loading time of SWF dramaticly (hopefully