I agree with you on accounting for the PM shares. We may never ultimately know what happened, unless they show up in a filing somewhere. Some explanations could be good for shareholders. If DDB is correct, however, we'll see something after Q2. It'd be nice to see the accounting to put the topic to rest.
As for debt conversion. I have to double check the 10Q, but isn't only 3M of debt attributable to PM? Recently Navidea has taken to Oxford, GE and Crede for financing..this leads me to believe they've been shying away from PM for financing. Although after the Crede firesale and the GECC absurd covenants and MG appointed to the BOD, that will likely change, so in a few Qs it's possible the PM LOC will be tapped for additional cash. But I don't think we'll see a debt conversion until that the LOC is well used.
MG/PM relationship. From the 10K. There seems to be at least a change in relationship between MG and PM, which could have a compensation component. MG is withdrawing from any ownership or management position within PM..plus reference to "timing of separation"