Merry and Pippen's escape from Grishnakh

[lathspell]

Anyway, the thing that stumps me was the mention of Gollum (or atleast Pippen making the gollum sound in his throat). Did Pippen really think that Gollum was there? Did he guess that Grishnakh was around when Gollum was tortured to find out where the ring was?

If Pippin thought that Gollum was there, it would be, in my eyes, rahter stupid. He knew that Gollum knew Frodo had the Ring. Or, at least that Gollum would go after the Hobbit named Baggins. But I think he knew about Frodo having the Ring after all the conversations he must have heard in Moria and on the Anduin.
So, I think it would be the second thought as well. He may not have been around then, but I guess that he heard about Gollum and knew that a Hobbit caried something of great value.

greetings,
lathspell