There is no bus from TTC to All Stars. If Epcot is still open (or has not been closed for more than an hour) the Epcot monorail will still be operating. I would walk (or monorail) to the TTC, take the monorail to Epcot, then catch an All Stars bus there.
If you stay out too late you may be left with no other choice than a bus to DD, then another bus to All Stars. That is a long ride.