Use the Ettin Control Orb to control an Ettin and then use the Ettin Control Orb on your Subdued Canyon Ettin to lift the Huge Boulder off of Foreman Oslow at Lakeshire.
<Upon touching the orb you hear a faint click.>
<You remove the orb from the pedestal.>
You now control the orb, therefore you now control the ettins. Maybe you can use an ettin to remove the huge boulder currently crushing Foreman Oslow over at Lakeshire. Find an ettin and use the orb on the ettin. Then head over to Lakeshire.