Esterhuysen used the word "fuck" repeatedly in a 01:00 broadcast.
EWN editor Katy Katopodis said he had been summarily dismissed.
Although she had been unable to reach Esterhuysen by phone, a letter of dismissal had been delivered to his house.
"We can't tolerate that kind of behaviour. I don't think it's appropriate to use our platform, which is credible, to promote your own agenda," she said.
A 41-second clip, purportedly of the broadcast, on the website twitvid.com had garnered 35 000 views by Tuesday afternoon.
In it a man who identifies himself as Mark Esterhuysen, says: "Fuck racism, fuck the pigs who killed Andries Tatane, fuck the AWB, fuck racism. We are all wild animals here, meant to live free.
"Fuck capitalism, fuck fascism. Fuck this fucking wage slavery shit. Fuck domestication, fuck Julius Malema, fuck the state. Fuck the petrol economic growth on a finite planet."
On his Twitter feed, he identified himself as an enemy of the state, a defender of anarchy, a proud member of the primate clan, a cunning linguist, and a master debater.
He had tweeted that all he wanted in life "is for @GarethCliff to read my blog".
His most recent blog was on the role of sport in modern South Africa, from an anarchist perspective.
Other topics dealt with the futility of civilisation.
24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.
Afrikaans pay-TV channel kykNET has been fined R30 000 for broadcasting a programme mimicking people suffering from Tourette’s Syndrome.
Read More »
We went walking with the dinosaurs at the CTICC. See our behind-the-scenes pics here. Read More »
New viral video!
New music video!
Cool with nudity!
Seen in Cape Town!
Real party animals!
New trailer out!
Fin24 users provide their own personal tips on how to save money instead of trying to keep up with the Joneses.
MidrandNew East Consulting Services (Pty) LtdR5 000 - R35 000 Per Month
RoodepoortNew East Consulting Services (Pty) LtdR5 000 - R35 000 Per Month
JohannesburgOnly the Best Randburg
HousesR 4 800 000
HousesR 2 200 000
HousesR 4 590 000