Watching the current WR for 4.8+ I believe they patched the rotating disk. In the WR you effortlessly walk off and it catches you followed by a jump and you're through, the current patch (5.3) I feel they may have changed that. Just a thought, if you can still catch that edge on 5.3 let me know! :)

Nah its all about timing just jump when u spawn in and then walk off.

the record was done in patch 5.3.