1) "Insolvency is the inability of a debtor to pay their debt."
2) "The state of having liabilities that are greater than assets"
It is obvious that 1 applies.
Since Gox is shut down and doesn't have a real office what assets or income do they have? A few servers, corporate car, printer, desk stapler? (most of these cost money to run)
How can you say they are still solvent?
I'm simply saying that if you exclude BTC debt and treat the BTC held by Gox as assets, you're looking at 137M USD of assets (BTC + fiat at bank accounts) and 63M USD of liabilities (gox user, fiat balances).
Gox is only insolvent if BTC debt is included, so why is the liqudator involved if the debt isn't?