Pollard gave the Israelis so much information for the $50,000 he was paid that his handler had to lease a high capacity photocopier.
The information in question jeopardized no agents, no secrets were "passed on to China" (or Russia for that matter)
You're fairly sure then that sources and methods were not revealed in the raw intel that Pollard turned over to a KGB-penetrated Mossad? Well, as long as you're sure...
Agree so far? I hope so! If not, give me fifty (virtual) push-ups, Jarhead!
Anyway, here's the jump...
(3) Pollard is no longer a seceret, and the stories told aren't so secret anymore if true, or those stories are false otherwise.
Thus (4a) Since the secrets out, he should be released already! Leaving him in just creates high interest in what should be secret. It calls attention to things we don't want attention called to.
Or (4b) he's being held on false pretenses.
Either way, let him go and let the attention of onlookers be dissapated.