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.
A complaint that a Metro FM presenter promoted the use of dagga has been dismissed by the Broadcasting Complaints Commission of SA (BCCSA). Read More »
A petition is circulating in a bid to stop South African playwright Brett Bailey's exhibition about colonial oppression, that features living people, from going to London, a report says. Read More »
The Top 3 couples!
The Top 12!
He's back on TV!
Mother City rockers!
The rugby dancer!
Super sexy chat!
A quick chat!
12 years old and on TV!
Printed sheets of flexible solar cells can mean your electronic devices can soon be charged with the use of renewable energy.
BluffDymasize (Pty) LtdR5 500 Per Month
HousesR 10 800 000
HousesR 3 900 000
HousesR 1 530 000