Assuming it goes to trial, it will be up to a jury and/or judge to decide the facts of the case based upon the evidence provided by both sides. Since we aren't privy to any of that evidence, I think the only reasonable thing to do is sit and wait, and hope each side receives a fair hearing. (I have a considerable degree of sympathy for both sides.)
It is also worth keeping in mind that even if the plaintiff himself has no desire to go to court, his health insurance company would file a suit on his behalf, to recover the expenses.