There's an article in Stars and Stripes that seems to say the Navy is confirming that USS Hartford took a very serious roll when when was hit; the article in question says the roll was as much as 85 degrees. The fact that the boat was able to continue operating after such a transient is a testimony to the skill of her designers and builders.
Also, Lt. Raymond Perry USN (Ret.), noted skimmer asshat, put in his two cents about the Hartford collision; as usual, his suppositions are the equivalent of suppositories, in that he just pulls stuff out of his ass. He apparently thinks that submariners get hurt from 10-20 degree rolls, even through we routinely practice angles in excess of that. Read his article over at SFTT (Motto: Badgering good men to suicide since 1996) if you want a laugh.