ouch, sorry to hear that, that's a tough one.

I'm sure the FBI would know how to search for data on the repartitioned disk. But I don't. You might want to google for toolsrelating to your actions like recovering repartitioned disk or recovering tools for  data from disk, etc...

I'm curious, i'll search too.

Did you format the disk and cause an erase/write-over the blocks? that would have wiped out the data.