Looks like MJ100 JFK-STN made it over today so perhaps operations are indeed normal for the moment. Often, aircraft will be impounded by local officials on arrival when suppliers are not paid. MAXjet seems to be based in the U.S. so perhaps a chapter eleven filing is imminent. There is a cottage industry of maintaining airline operations in bankruptcy, it keeps lawyers and investment bankers gainfully employed.
It is traditional for other carriers to honor tickets on an airline that has shut down. Also, as a courtesy, crewmembers are given rides home. However, in the post-911 world this may be a little more complex to authorize should it come to that. And yes, it does seem a little premature for Silverjet to make the offer.