My take:
The tour has been in discussion for a long long time.
The Kim slot was a set up by producers and Coleen Nolan. Nolan wanted to raise her profile for the tour so this was a way to remind the paying public that she won cbb. The producers knew the two names together would get viewers in case it kicked off.
Producers suggested Linda on the show, who jumped at the chance, knowing that Linda was out for revenge and thus it had more chance of kicking off.
So basically the Nolans were puppets, Kim was bait.
Producers let the panel, especially Coleen Nolan taken the flack for the resulting mess.
When it started to look bad, producers drafted in Jonathon Ross as a snub to viewers to show that anyone can make a comeback despite public opinion against them (ten years previously Ross had been subject to similar public outcry).
Nolan was advised to hold back announcing the tour in the days following the disastrous LW show. However, too much money had gone into the promotion and it went ahead with predictable results.
Several Nolans are represented by the agent who handles Colleen. The family is at war about whether they should stay.
Kim will tell the truth and the full story if she ever feels the time is right.