3 items from 2014
Mr Motivator has departed BBC One's gymnastics show Tumble.
The fitness expert and former GMTV personality dislocated his knee during a trial run of the show.
Mr Motivator, whose real name is Derrick Evans, will need to undergo surgery to correct the damage done to his knee.
Evans said that he was "devastated" not to be able to continue in what he describes as an "amazing experience".
"A heartfelt thanks goes to all the team but especially my gymnastics partner Kerry and coach Alberto, who have been so supportive and brilliant to work with - I'm sorry our journey has been broken this way," he added.
BBC recently released the first cast photo for its upcoming primetime show.
Steps star »
The first cast photo from BBC One's Tumble has been revealed.
The newly-released picture features the ten celebrities taking part in various gymnastic activities, aided by ribbons and hoops.
Middleweight boxing champion Carl Froch and Mr Motivator complete the lineup of celebrity competitors, although the fitness expert's involvement was recently called into question due to injury.
Watkins has shared gruesome injury photos with fans during his time training for the show.
Tumble will air on BBC One »
BBC One has announced the 10 celebrities to compete in new gymnastics reality show Tumble.
The judging panel will be made up of Olympic gymnastics legend Nadia Comaneci, London 2012 hero and Strictly Come Dancing champion Louis Smith, Team Gb gymnastics captain turned sports broadcaster Craig Heap, and cirque artist Sebastien Stella.
Tumble will see the famous faces learning and mastering gymnastic skills across six weeks of live TV shows. »
3 items from 2014
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