Hi Eljay,
You'd have to time it just right. A few weeks ago we walked from Canada to Hollywood and Vine in about 40 minutes...but we're VERY fast walkers.
The show will end at 1:35 but by the time you're back on the streets of the Studios it will be at least 5-10 minutes, depending on where you were sitting for LMA.
So figure 1:45. If you walk straight out and walk over to Epcot (much faster than taking the boat, unless the boat is there and ready to leave, in which case it's about even) you could do it...if you walk very fast. You should certainly be able to get there for some of Off Kilter's set.
Good luck,
Bob