All these accusations of people hating on Mark or being unfair, here's a quote taken from tonight's episode when he was talking to Chris and Ashleigh in the kitchen.
Chris: I was worried you might get too upset by it.
Mark shakes his head in disagreement several times.
Mark (calm, composed, content): I was very logical. There was three to choose from, then there was two to choose from. The fact of the matter is we're all extremely close to Christopher and only 1 of us is very close to Ash. It wouldn't make sense.
Ashleigh: And I think the public would've looked at you in a different light if you'd voted for Christopher instead of Ash.
Mark: 100 percent.
In terms of behaviour and the content of what he's actually saying, that *totally* jars with his impassioned, didn't-want-to-but-they-forced-me bile he spews so melodramatically in the video in the OP.