‘He’s going out of harm’s way, I tell you,’ answered Shagrat. ‘See? He’s precious. I don’t trust all my lads, and none of yours; nor you neither, when you’re mad for fun. He’s going where I want him, and where you won’t come, if you don’t keep civil. Up to the top, I say. He’ll be safe there.’
‘Will he?’ said Sam. ‘You’re forgetting the great big Elvish warrior that’s loose!’ And with that he raced round the last corner, only to find that by some trick of the tunnel, or of the hearing which the Ring gave him, he had misjudged the distance.
The two orc-figures were still some way ahead. He could see them now, black and squat against a red glare. The passage ran straight at last, up an incline; and at the end, wide open, were great double doors, leading probably to deep chambers far below the high horn of the tower. Already the Orcs with their burden had passed inside. Gorbag and Shagrat were drawing near the gate.
What was Sam's plan here? It's not explained at all by the book. Was he really going to reveal his invisibility to the orcs and very likely get slain there and then? Just for basically what feels like the one "one-liner from action movie moment" from the entire book...
Is the idea that this is supposed to be a "comedic relief" of some sort? That he was going to act heroic and "cool", but the orcs are already gone and don't hear him? It just seems out of place without even so much as a hint of an explanation.