Was Gollum's slip the only way?

[Kath]

Even if a Hobbit had the Ring for one second, would he have been able to do the task?

Well we know from FotR that even if you have only had the Ring for a minute amount of time you are unable to try to harm it. When Gandalf tells Frodo to throw the Ring into the fire he is unable to do so and Frodo has only really had hold of it for the length of their conversation.

Therefore if any Hobbit had it even for one second the Ring would probably have already exerted an influence strong enough to dissuade the bearer from throwing it into Mount Doom so an accident such as Gollum's fall would have to be the only way unless, as Tolkien said, the bearer was completely pure and flawless - unlikely in a Hobbit.