I think the OP may be on to something—and probably the exact opposite of WH claims is what happened (the rule of opposites).
That would mean the planted “evidence” was debated around the Just Us Department and the White House by staff—probably a big email trail and a bunch of meetings discussing whether it was real or not.
My guess is that the decision was not unanimous or even close to unanimous, but the majority of the Ruling Central Committee decided to “take a chance” knowing the mass media would have their back in the worst case.
It seems the government--bureaucratic and elected--is out of control. The right hand isn't communicating with left.
Case in point, Pelosi's visit to Taiwan last week and the FBI raid on Mar-A-Lago.
Pelosi might have inadvertently triggered China's invasion of Taiwan and the FBI might have just as inadvertently re-elected Trump.
These are not the actions of a thoughtful, well-coordinated management system/group.