In my opinion, this is just one more place where samsung is a bit **** (pardon my french). Same happened to me. I backed up my Galaxy S last week, and this weekend it was lost/stolen. Now I'm stuck with some .sbu files that won't open. I want to avoid having to reverse engineer those damn .sbu files, but hope is fading.
I've just called Samsung Support, and the dude on the phone apologetically explained that it's only possible to restore this information to a new Samsung phone, there's no other tool to extract the information from these files. I told him this was pretty useless, and he agreed.
In addition, I fear the backups are pretty incomplete, and I think a lot of stuff won't be restored.
I hope someone reads my samsung review and buys something other than a samsung, to be honest. Just my way of getting back at them for wasting a lot of my time.