No, I don't. But I am a CSR for Sprint Wireless business care, and have done more than a few of these unlocks.
The issue may be that you're getting the MSL. MSL was used for unlocking older devices. You would take the phone and MSL to the new carrier, and they would decide whether or not to unlock it for use on their network. New phones require a DSU unlock, which is done directly by Sprint. If you need to educate the rep, the tool we use is called DNA2. They will enter the phone's MSID into DNA2, and it will let the rep know right away if the unlock was successful. If it is, you just make sure the phone is powered on and in a Sprint coverage area for about an hour for it to receive the unlock signal. If DNA2 says the phone is not financially eligible for unlock (but, as you say, there is no contract or IB/Lease agreement against the phone), they will have to submit a ticket to have the unlock eligibility corrected. This ticket takes 1-2 days to process. Then the unlock can be done.