The Happy Mondays singer - who became the second celebrity voted out of the camp - said the former royal butler is much tougher than his squeals during trials would suggest.
Ryder, 60, told The Sun: “I love Paul Burrell, but the end of the day Paul comes from a pit village. Paul’s dad was a miner, Paul is hard as f**k.
“I think Paul’s great, but I did take the p**s out of Paul’s screaming in trials.
“But you know. It’s just a laugh.”
And the rocker also claimed dietician Gillian McKeith - who was the first celebrity to be voted out of the new ITV reality spin-off - was faking their feud.
Ryder said: “I’ve bumped into Gillian at least ten times in the last 12 years with her kids, with my kids, and I thought we’re all good.
“But at first Gillian’s head was still stuck 12 years ago, she was ready to battle with me.
“I was working hard at making me and her get on, and as far as I was concerned I got on with everybody and everyone was having a nice time.”
The next episode of the pre-recorded show will be see Joe Swash and Dean Gaffney enter the camp.
Also returning are Coronation Street star Helen Flanagan, Olympic athlete Fatima Whitbread, retired cricketer Phil Tufnell, Myleene Klass and boxer Amir Khan.
Swash won the eighth series of the show in 2008.
Toffolo won the show in 2017, and the only other returning winner is Tufnell, who was crowned King Of The Jungle in the second series of the show in 2003.
I'm A Celebrity... South Africa continues on ITV at 9pm.
Watch: Gillian McKeith appears in London's Mayfair after I'm A Celebrity exit