>"we could now release substantial information...

"Could" means they proably won't, or else they'd be doing it. Which means there may not be any at all. Why should we assume there is?

The lawyers aren't in a courtroom and they're not under oath. They're representing their client (i.e., saying exactly what he'd say if he'd thought of it, if not more). They're trying to counterbalance the prosecution's leaks with their own spin.

They're just striking back with zero risk to the case.