CEDR EasyJet Complaint worth it? [closed]

I recently raised an EU261 cancellation claim against EasyJet for a flight from Bristol to Prague that was cancelled. I was only going to Prague for the weekend and the next available EasyJet flight to Prague was the following the evening so I took the flight refund.

The flight was originally cancelled due to a drunk Stag Group and the inexperience/poor management of the EasyJet staff. However EasyJet claim the prior for its cancellation reasoning.

Long story short the Stag group took around 30mins to remove from the plane at which point they claimed to still have items onboard. The result was it took the EasyJet crew over 3 hours to 'identify' bags, first by collecting passports of passengers who had bags in the hold to try and identify them, when they realised this wouldn't work they unloaded all the bags and got passengers to identify their baggage. By the time all this palaver had gone on we were then informed the crew would be running over their safe operating hours.

My argument was that EasyJet should have a strict procedure for this, not the cabin crew dithering of how best to problem solve. Also considering this was a Friday night flight to Prague you expect them to be wholly prepared for potential passenger disruption. EasyJet simply claim it was the Stag groups fault and it was 'out of their control'.

My EU261 claim has already been rejected, is it worth me pursuing an ADR with CEDR considering the above. I've reasoned that inexperience of the staff wont have been documented as part of the reason for this fight cancellation and are CEDR going to simply look at this as the Stags fault.

Thanks