Alright, I watched it again more intently and this is what I found.
Demo starts on a new map it seems. Tech says on voice something to the effect "he's on your team". Silent responds with disappointment. I'm guessing Tech meant Virtus, since Silent and Virtus are on CT, while Tech is on T.
At around 1:40, Autumn warns Darkness of spawn camping, when he wasn't. For the next minute, she castigates him on voice in a condescending tone like one would treat a puppy who just peed on the carpet. Seems disrespectful, but they seem to know each other by their real names.
At around 2:00, Tech moves Silent over to T from CT. The next round (2:54), Silent dies to Virtus. Silent cusses Virtus out on voice, "pussy ass little bitch".
While Autumn is beating her puppy, Virtus challenges her calls in text concerning Darkness. Darkness sort of thanks him on voice teasingly awhile later.
At around 3:02, Autumn warns Virtus of camping, which he hasn't yet in the demo from what I've seen. They argue, fourty seconds later Autumn stutters out a threat on voice to slay him saying she's allowed if he breaks the rules.
Skip to around 6:30, knife fight between Silent and Virtus begins. Takes forever for them to find each other. The two dance and finally get right click hits on each other around 7:10. Silent starts backing farther and farther away until he starts running at around 7:20, beginning to sing on voice to taunt Virtus that both will die. They both die after Silent runs down the timer.
Virtus sets up a slay for the next round on Silent from the admin console. Silent dies, starts arguing with Virtus on voice with a great deal of bravado (having two admin friends on must have helped the ego). Tech and Autumn text for the first time asking for why he was slayed (say nothing in voice). Seconds later, Tech kicks Virtus.
The first time I watched the demo, I didn't notice that Tech, Autumn and Silent were all friends that already had a grudge against Virtus for some reason. Besides Virtus cussing a lot, I really didn't notice him doing anything wrong. I still think the slay was getting off light, especially after noticing Silent cuss Virtus out on voice. I'm sure the other demos might explain the tension, but even with insomnia I'm not willing to wade through 5 more demos.