They couldn't toss the CTs into the OBS as they are, because strictly speaking, they're not Lehman securities. They would have to convert them to Lehman stock before making such a move (I really hate to be raining on everyone's parade here - just want clarification). And since the OBS is one big share, there's theoretically no limit to the number of security owners they can throw into it. It's just a matter of preserving a record of the original pro rata beneficial ownerships.
That said, I REALLY HOPE we have something coming our way - it'd save me and my family from years of financial limbo.