I know that today's episode was entertaining, but Sahadev was robbed of almost all his glory. In the epic, Sahadev alone killed a fleeing Shakuni - so the part about Shakuni being a coward was correct. However, all 5 Pandavas attacking him was defamatory.
Moreover, Dury was nowhere around to save Shakuni. He had fled the battlefield after being defeated by Dhrishtadyumna, and Sanjaya had temporarily entered and was defeated. Shakuni's son Uluka was more valiant - he was attacking both Bhima & Sahadev. Sahadev w/ an arrow beheaded Uluka, and Shakuni, seeing this, got fearful and fled. That's when Sahadev chased & slew him.
And Dury hid in an unknown lake, and when he was chatting w/ AKK, who had come to visit him, some hunters spotted them and went & gave the news to Bhima, in return for a big reward (they'd never have to hunt again). Then the Pandavas went to the spot to taunt Dury