Actually it was Cineworld that crumbled. The 3 big cinema's all agreed to a total boycott (other than the Premier at Odeon) and then for some reason Cineworld just changed there mind.
Vue and Odeon have both managed to secure very good deals out of it though, whilst Cineworld have gained nothing other than looking like they'l just bend over to the movie companies.
My understanding is Odeon have recieved a rather tasty lump sum to cover the loses from the final 5 weeks of the film, and I know for fact that Vue have agreed a 4 year deal with Disney where Vue will show 6 disney films over that period with a 12 week window rather than 17, and in return Vue will get the films at a huge huge discount. Disney also must give Vue a fair bit of notice as to which 6 films (including Alice) will be 12 week, rather than 17 week window films.
And whilst this is my opinion, rather than any kind of fact yet, im betting Toy Story 3 will be the second of the 6.