If his is not guilty he must take the stand on the next phase and shout it from the mountain top. Which is what he should have done in his own defense UNLESS there was other evidence that could not be presented unless he took the stand and the evidence was used on cross or to impeach him.
You're right. *IF* a new trial is allowed he should do just that.
I have a feeling there was more between BVD and Westerfield than Girl Scout Cookies.