There was always the intention to keep at least one of the 400's providing that work could be found. There was a potential contract but it was scuppered by last minute problems. The ability to take on a contract depends on having the resources in place so the upgrades were done in good faith and some were temporary in any case. Still not very nice to put in all that effort and then have it snatched away, but no one was misled. It is not the fault of GSS that the economy is in a bucket and that there are few contracts to be had.
Should the world economic situation improve then expansion will be back on the cards. The outlook for the next year or two is rather flat. Beyond that is anyone's guess. During that period, a significant percentage of the pilot force will retire so there will be some movement whatever happens.
Anyone with the ability to make accurate predictions beyond next month in this game must be wired in to some higher source than us mortals.