Apparently, the mascot has a long-running war with the Easter Bunny, and any other mascot that jumps out to tackle him in general. Teddy swore on Saturday that he would be ready, which is probably a good lesson to not trash talk the Easter Bunny.
Here's a tighter shot of the FINAL TACKLE...
But everything is okay this morning (the day after the mayhem). This is the Rushmore Four all in attendance at this morning's White House Easter Egg Roll.