This seems to work well for WSG or any other Battleground. Follow the steps
° Press "Esc", open "Macros"
° Make a Macro, Make Name "MS"
° For Macro Description, type "/mountspecial" (Without the "` s)
° Put it on an actionbar so you can easily spam it
° Now, start running and spam that button.
° It will slide you, which is a good escape from PvP!
- Sorry, I found this one out myself, I can't show a video to demonstrate.