Has Wolfgang Smith gone too far?

I only noticed that he had written this book today: Christian Gnosis

From the description:

Smith maintains that Eckhart has not in fact transgressed a single Trinitarian or Christological dogma; what he does deny implicitly, he shows, is none other than the creatio ex nihilo, which in effect Eckhart replaces with the Kabbalistic creatio ex Deo. In this shift, moreover, Smith perceives the transition from ‘exoteric’ to ‘esoteric’ within the integral domain of Christian doctrine.