Basically, no. But the interest you paid on the mortgage for the entire year is deductible weather it's your primary residence or 2nd home. The principle part of the mortgage payment is never deductible under any circumstances.
Now if you qualify to claim a home office in that house (and I doubt you will qualify, since claiming a home office would have to be to the convenience of the employer and not "your" convenience) that doesn't change the fact that the principle part of the mortgage is still not deductible. All that will do is shift the deductible mortgage interest from the SCH A to the SCH C resulting in more paperwork for you, and absolutely no change what-so-ever in your tax liability.
Also, you may only be able to claim the home office at best for the SCH C (1099-MISC income) only for the time you were actually "self-employed", for the months you actually lived in the house, and you can only claim that space specifically used in the house for the home office. So in the long run it would not be worth your time, as there would still be no change to your tax liability.
In other words, don't waste your time with the home office stuff.
