Amizes: Did you end up inside Jorrvaskr, or just next to it? My guess is that you cant summon yourself or anything else outside of walls while inside a city, so the game automaticly moves you to the closest valid spot. Either way, I'll look into it and see if I can do anything about it.
jonos: I was actually considering to not make it available until Expert-level (75) when I made the mod, though I ended up using Adept(lvl 50). I might change it in future versions. The main reason I added "Psiijic" to the title is because they both use the same visual effect.