Forgotten Realms: Tyr and the head-on-a-spike
I'm not seeing the connection with undue suffering, or suffering on others' behalf - since the goblin raiders are already dead by that point, I'm not seeing the connection. Now, if it were the still-living raiders impaled on spikes to die slow deaths as travelers walked by (the classic Roman torture for the rebellious gladiators of Spartacus, for example) that's probably be way out of line for a Lawful Good god, regardless of portfolio.
For Helm? Maybe. For St. Cuthbert of Oerth? Possibly. For Bane? Hell, it's in the training manual under "examples."
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