I would love to know Chris's side of the story but i'm not sure even Sharron's blog does her any favours if you read between the lines.
In a nutshell, Sharron heard her song, didn't like it plus it was fast which means more arm waving theoretically due to more beats, so shoulder injury gets worse.
She tells Chris that she wants a slow song e.g. the Doc's song for that week coz she doesn't think her shoulder can take it. Chris says he wants her to at least try the song and that the choreography will be adapted to take into all her injuries (or something similar).
Sharron agrees to try but is already thinking of withdrawing. They do the choreography. At some points Sharron is being less than co-operative and Chris is almost bending over backwards to try and choreograph around the injuries which he obviously did well, seeing as they kept most of the choreography, according to Sharron's blog.
They all move on. Sharron tells production that she is thinking of withdrawing because the song is too fast and that her body won't do the choreo, which it probably would've done coz they kept most of it.
Production phone Chris and ask whether they could change Sharron's song to a slower one.
Chris thinking of the music mix, and the fact that Sharron said she had felt ok with the choreo on Monday as she obviously didn't bring it up again at the end of the session, says he wants Sharron to persist with the song.
Sharron hears on Tuesday what Chris has said. She thinks more on withdrawing. She says more to production that if the song doesn't change, she will be unlikely to perform although even if she does withdraw, she will perform on Sunday so that there is a full line-up.
Production probably thinking of all the drama and controversy, decide to go against Chris and give Sharron, her song from the next week. Pav and Sharron try and keep C&J's input of choreo in the slower piece.
Production cut the VT to try and put as much as controversy in it as possible.
Sharron & Pav skate and happen to be bottom of the leaderboard. Is then put into the skate-off by the public, skates again. Judges decide to save Emily who up until that point in the competition had always been below Sharron on the judges leaderboard. Pip has to force her to say Thank-You to J&C. Then Jason walks off without even saying goodbye to the couple.
Is that what happened? I tried to be as unbiased but it still puts Sharron in a bad position. It shows her as unco-operative, adamant that she's right and will get her way. May go along for a bit but then go behind your back to higher authorities.
She may have had the best of intentions in offering options to production, she may have been looking out for her injured shoulder but the fact they kept most of the choreography is almost more of an insult to J&C even if that wasn't the intention because it says the choreography doesn't hurt my shoulder or my back but i changed the pace of the music anyway.