I'm not entirely sure if this is a bug or an intended interaction, however, I was playing Urgot (top) vs a pantheon. At one point pantheon begins to ult, I manage to ult him right as he's about to launch. I then become pantheon's ult. The red circle appears and I come flying from the sky and land where he intended to ult. I understand if we switched spots, but I didn't know if it's intended for urgot to actually finish the enemy panth's ult. I have a replay if it is needed.
My sumomner is thedayisbreaking and I'm on the NA server the game was played on 1/23.
Link to replay, must have LoL Record: http://www.mediafire.com/?6lljdblvi1ti9ll
The ult happens at roughly 13:30
Edit...again: Validated mediafire account, please let me know if it works now
EDIT EDIT: The "Crabdrop" is at 13:54.