my first roll on the 690 came out like that, maybe not as loose but not far off .. I've sent it to Filmdev, hopefully it'll work otherwise a lesson for future.
Honestly, I've had a couple of rolls like that - the camera rolled it tight, then I've fumbled it and it's unravelled as above. I'd usually just stuff it in a pocket and try and re roll as quickly as possible - much like opening a camera with film still in, it's never as bad as you think.
my first roll on the 690 came out like that, maybe not as loose but not far off .. I've sent it to Filmdev, hopefully it'll work otherwise a lesson for future.