For everyone's information:
I sent an email to the trustee two days ago, asking if the withdrawal of Marshall's Ch. 11 petition means that a reorganization within a Ch. 11 framework is no longer an option.
He wrote back yesterday with the following answer:
"Shareholders and creditors have the right to ask the bankruptcy court to convert this case to a chapter 11 case and to propose a plan of reorganization. So far, no one has done so."
As far as I can tell, and not intending to raise any false hopes, there seem to be discussions going on behind the scenes concerning an attempt at reorganization, and apparently, the window is still open. It's a very long shot, at best.