mooing_cowmilk | I Exploited MCCI Dynaball By Creating World Peace @mooing_cowmilk | Uploaded 5 months ago | Updated 13 hours ago
If you are seeing this video it means at least the main bug has been patched.
Little surprised that no one found this earlier...

0:00 Intro
0:35 Bug & Explanation
2:11 Ending of game 1
4:27 Game 2: Confirming the bug, pushing the limit
5:43 Dynaball: The Movie

Some Buzz words to help YouTube search is the Minecraft multiplayer championship server but island edition.