It is possible to LJA over the trigger where Midna tells you to go back and beat the forest temple. This allows you to exit Faron without beating Forest Temple or clearing the twilight. This is currently used in Any% and Any% No S+Q.
1) You need to stand with Link's left foot just infront of the two black spots on the ground shown in the video.
2) Target as far left as possible without targetting the fence
3) LJA over the trigger (you can get a double LJA into the trigger)
Please note the positioning is quite precise
There are several setups for Faron Escape with the ones done by Dragonbane and sva being the two most promiment.
Dragonbane's setup as human:
Sva's setup as wolf: