Guild Wars 2

So I was having fun in the winter themed crown pavilion today, when I decided to jump off the eagle dome thing and see what happened. I decided to use my greatswords ability “Swoop” to fly off. I began channeling it off the tip of the eagle statue’s nose, right at the edge, and it didn’t stop channeling until I landed in water at the bottom of the crown pavilion. The birds that you see flying around down there are actually in water. I could use all my aquatic abilities, and my aquatic pet was still with me. I dove to the bottom and explored for a bit, it seems there is no way to get anywhere outside the crown pavilion but there was a lot of empty space down there. When I came back up to the surface, I tried to jump out of the water and was immediately teleported back to the main entrance to the pavilion. I then came back to the eagle statue and tried just jumping in, but was again teleported. Then tried channeling “Swoop” again, but it didn’t work again.

My guess is it was one of two possible causes.
1. Jumping in while channeling something lets you below, but only if you hit certain spots.
2: Jumping in while channeling lets you below once, but then if you get out, it wont let you in again due to the 1st teleport.

I’m wondering if any other classes can do this or not, or any other abilities. Has anyone else had this happen or anything like it?