I seriously doubt that. Just looking at the metadata of the files should be enough to clarify what happened.

And anything obtained in the raid of their home wouldn't be subject to such reasonable doubt.

The only way I could see things happening the way you suggest is if law enforcement doesn't examine the evidence digitally before raiding the home. If the evidence then turns out to be planted, any evidence found in the home might be thrown out due to it being an illegal search.

But in that case the prornographer will still have been publicly revealed. And the feds will have a geek squad to investigate as well.