The shell would be considered an asset of the company, and the trustee would be free to sell it if he had a potential buyer.
But there're a couple of things I don't understand. It seems in this case Lazar applied for custodianship in Nevada. But here's an example of a sale of a public shell directly from a bankruptcy trustee to an interested party. The sale contract was drawn up in 2015:
As you can see, the buyer, Ronald Nahoun, paid a non-refundable fee of $10,000 by the terms of that contract. When the sale was approved by the bankruptcy court, Nahoun would pay an additional $15,000 and take control. In this case, his control would take the form of preferred stock that would be transferred to Nahoun. Once 30 days had passed, Nahoun could name a new board; once 90 days had passed, he could issue stock to himself, do a reverse split, and more.
I don't know what happened after that. Powerwave was a Delaware company, so I don't know whether Nahoun ever installed himself as president, or if he tried to sell the shell. If the latter, he was apparently unsuccessful. No one ever filed a Form 15, and PWAVQ's registration was revoked last month: