Sounds like the point of the (presumably criminal) trial was to determine whether Vanderklok was guilty of the charges presented - once he was acquitted, there'

Sounds like the point of the (presumably criminal) trial was to determine whether Vanderklok was guilty of the charges presented - once he was acquitted, there's no point in continuing. If he wants to present a case against his accusers to show _them_ as being guilty of violating the law, he can, but that's a separate case - which he has indeed filed, very recently - and would be dealt with at a different trial.