Disney sabotaging their own film is blatantly BS. That being said, I don’t think it’s that much of a stretch to at least consider that the WB/Bad Robot deal may have been a catalyst for Bob Iger exerting some creative power over this film.

Cue speculative alternate narrative…
JJ signed on under the condition of almost full creative control, Bob reluctantly agrees knowing that JJ might be a good asset to have in his pocketbook. WB deal happens and now JJ won’t be working with Disney again anytime soon, so Bob likely felt he could reverse course and put out the movie he (and whoever other non-creative executive types) thought would be most profitable.

I’m not saying it’s probable, but it’s way more likely than the vindictive sabotage portrayed in the leak. If there is any truth to the leaks, this could be a classic case of telephone.