The medical personnel waited to sign the charts until right after the ink went on the warrant (I requested the paperwork and the time at which the entries went in betrayed them though, the clever bastards wrote it hours earlier but then waited until the warrant was signed to actually sign it). Then as soon as the warrant was served, the hospital administration told everyone to GTFO. Their coverup was comically obvious. But since I was innocent and never charged, I never had the occasion to challenge the warrant.
As I mentioned, the same hospital system had been sued before for this same thing though and the hospital/officers won, even without a warrant. As long as you're innocent you can't do much about it since the civil suites lose and you won't be in criminal court where you can probably squash the evidence.