Or they may argue the prosecution did not meet it's burden of proof and ask for summary dismissal.
What people who watch too many bad movies and TV shows (like Ted) tend to forget is that the accused doesn't have to prove himself innocent; the prosecution must prove him guilty . . . beyond a reasonable doubt. To that end, if they feel that hasn't happened, they're much better off just making THAT case, and keeping their mouths shut otherwise, to avoid giving the prosecution anything to dig at.
And except in extreme cases, the defense lawyer is a damned fool if he allows his client anywhere near the witness stand.