How to Rend Fiends and Immolate People: A Guide to Sorcery

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I am AFB, but my recollection (and I looked up the spell at the time!), was that the caster did get to control the movement of the target.

The spell says nothing that grants the caster control over the monster's movement, nor does the errata say anything to that effect. The creature attacks something adjacent to itself (the caster chooses what it attacks), and then it moves on its own volition. If it cannot attack when its turn starts, it acts normally during its turn.

What should have happened was the surviving orc moves away, and the ogre starts attacking the party.