I had an adhesion of the foreskin a few months ago and had to have an operation to get my foreskin and the glands detached. Since then my foreskin has been really loose and rolls back really easily when my penis isn't even erect.
I believe it's because the surgeon had cut my frenulum during the operation.
It's not really a huge problem, it's just really uncomfortable when I'm moving around.
It's normal for the foreskin to be really loose. It suppose to be loose. Easy to glide up and down the head of your penis freely, flaccid or erect! If it was tight before, it's going to seem too loose now that it's free. It will take some getting use to now as all. I would suggest going back to your doctor to have it checked if you think something is seriously wrong.