I'd like to point you in the right direction though.
https://vanilla-twinhead.twinstar.cz/?issue=6785
This bugreport states that SoR behaved like a melee attack, that it could proc effects like judgement of wisdom and other procs like Flametongue when Shamans were introduced. There's a source from 2005 (our famous blogspot) and 2007 (EJ discussion) and mainly, there's a 2.1.0 patch note removing this effect, which makes it very plausible.
I'm mentioning this to you, because One Handed Weapon Specialization on vanilla "increases the damage you deal with one-handed melee weapons". If SoR was considered a melee attack, not a spell, its damage would be increased by 1H Weapon Spec. If you can prove the SoR being a melee attack is correct, you have an explanation for [CR]SoR[/CR] 1H Weapon Spec boosting SoR. Find some references from 2006.