Maybe. She does the ball thing too (she curls up so tightly into a ball sometimes you'd think she was a cat. I know my friend's greyhounds couldn't even possibley curl up as tightly as she does).My husky sleep like that, too.
Also a samoyed mix and another husky that I had.
I think they sleep like that when it gets hot for them.
When I lower my ac he would turn into a ball.
Yeah, but it's been getting warmer here and she's doing the stretch out thing right now (just not so goofy looking at the moment).