It is my understanding that that is in fact the basis of the legal action (the first hospital accused the second of “poaching their staff”), and that the specific injunction here is just a temporary stay until the facts of that suit can be presented (on Monday).
So, in terms of specifics, this is not a huge thing- Party A accuses Party B of wrongdoing, judge orders everyone to hold up for a few days until they can present evidence. HOWEVER, in context, this is so absolutely WHAT THE FUCKING SHIT that it’s hard to imagine what could have possibly been going through the judge’s mind- Because the context absolutely is “are employees in an at will employment state allowed to go work for a competitor?”