Sharky's end II

The snares of logic Saruman deployed
when Fangorn'd pent him up in Orthanc's tower
by light of day, were easy to avoid
mixed company had bled them of their power.
King Theoden remembered Hama's fate
who fell defended Rohan, and his liege,
his mutilated body at the gate
the last atrocity of Helm's Deep's siege.
'Twas Wormtongue, did for Sharky, in the end.
His last companion in an ill-spent life
a beaten cur's untrusty as a friend
and rhetoric's no proof against a knife.
Deranged arch-mage aspired to be a king
corrupted by long study of the Ring.