Jarvan likes walls a little TOO much

Alrighty, so I was jungling as J4 on red side, and our maokai was being pushed out and chased by an Urgot/Tryndamere duo top. Upon seeing my venerable comrade in such dire straights I immediately ran to his aid. Finding that trynd had pursued him passed the tower and was now at a deliciously low level of health, I chased him to where he was attempting to escape into our jungle near krugs. In order to cut him off I tossed my flag over the wall between the lane and the jungle, the flag landing a wee bit inside the wall. Thinking nothing of it I let fly a vicious dragon slayer strike, and proceeded to surf majestically over the wall on the magnificent slab of steel Jarvan calls a spear. You can Imagine my surprise when I reached my destination and found myself stranded INSIDE the wall, unable to take any action for several seconds as tryndamere huehue'd his way to safety. My good companion Maokai also witnessed this occurrence, remarking "what the fuck did I just see?". Please forgive his brutish tongue dearest reader, he is after all but a tree. Alas, I too was as stunned as Jarvan and neglected to press the F12 key during my intimate wall experience, however I shall endeavor to recreate said experience in a custom and provide visual evidence.