If I'm wearing my underwriter hat, I realize that one of the top sources of fraud in today's mortgage market is occupancy fraud - where borrowers fraudulently misrepresent homes as owner occupied when they ar not. This can cost the lender money because it's not priced properly according to the risk and the loan may not be sellable back to Fannie Mae. So I trust no one and require an air-tight case to make an exception.
At the end of the day, if the deal falls through then you can probably get your earnest money deposit back, but any money you spend on inspections and an appraisal is likely down the tubes.
My advice is to get your loan officer, and potentially his superior involved to help fight this. Provide as much information and supporting documentation as you can - a dated offer letter from your employer detailing the transfer, proof that you actually occupied the home up until the transfer, etc. Take this up the food chain and ask what is required of you to prove your intent.
I'm not saying this will work, but it's worth a shot. The Homepath program does allow you to buy this as a 2nd home. It's just that the rate is probably a bit higher and instead of only a 3% down payment you'd need to find a way to put 10% down, asssuming the lender offers the program on 2nd homes.
So to recap, your 4 options are to 1) try and work with your lender to get through 2) Re-structure your loan program 3) approach another lender 4) walk away
I hope this helps. Best of luck to you!