If worrying helped, I say go for it. The truth is the lender can deny any loan right up to the last minute for any reason they want. They are looking for cash, collateral and an ongoing source of income. If you can demonstrate to them that your husband's income will not be affected by the closing, then you have nothing new to worry about. They can and often do order a VOE at closing just to ensure nothing changed from the time of application to closing. If the person who answers the phone says anything contrary to ongoing income, you could indeed have a problem.
If he got transferred, would you still want this house or could he be transferred a long distance away? If it's local, just across town then fine. If it's out of state or across the state, that's another matter.