I don't understand why are you trying to imagine things.
Let's analyse what a good source like Vaytsekhovskaya told us already. From her words there are two things which sounds pretty clear to me.
Meaning he has a story with Victoria.
Now here there are two options about that
"someone else's wish":
a) That someone else could be Victoria. If she is in relationship with him I can see the jealousy, above all professional.
I&K being the most loved couple in Russia (I mean by the Fed and other powerful people lile Tarasova) and by the international judges?!
You bet I would be mad about it, and to think that his is my boyfriend and I could be his partner.

The bronze medal in Olympics was the last straw that broke the camel's back. So she "asked" (or possibly she even gave an ultimatum?) him to dance with her and he complied. Not much lost there, after all she is good looking and a good dancer, and she is your girlfriend.
b) It's somebody else, but I don't think it was Zueva at all. She most probably wanted to coach I&K, that I can see but not separate them.
So who's that somebody else? It's really hard for me to tell, when you think that I&K were praised and loved by the Russian high officials of FS.
I am more inclined to belive that it was Victoria, and If she really is in relationship with him, which seems so, than I'm 99.99% sure about it.
Time will tell us, but that's what I think and I'm almost convinced about that.