Hello there, this is an exploit that allows you to have soul link up while mounted, using battlegrounds (And your pet out aswell ofc)
Basically, just do the following
Sign up while mounted ---> when In the BG, summon your desired pet ---> Leave / win ---> Have pet out after the BG.
I tested this with WSG, on flying mount and I used my felhunter.
SS:
http://img7.imageshack.us/i/petout.jpg/