I didn't watch the demo since I don't believe that it's necessary in order to make me post my opinion regarding this report as I'm pretty sure that the concerned player did use the hacks stated in your topic as they are easy to spot.
However I'd like to give my opinion regarding something else regarding your report. You may believe that this guy is the original "Plzdie" only because he used his nick while playing in the Jailbreak server but this could be actually anyone pretending to be him only in order to cause problems to the server without people noticing it. I'm not defending Plzdie nor anyone to be honest but if you want to make a fair judgement regarding this situation, then you are a bit obliged to take this fact in consideration.
Cheers.