Did the SBC use that word? Disfellowship, yes but I’d have to see a reference from the SBC that they excommunicate anyone or entity.
No, they use the word “disfellowship,” which is as strong as it gets in Baptist circles. Nobody “excommunicates” anymore, which implies treating as if the excommunicated is a heathen. It’s a shame, because treating an obstinate, willful offender as an unbeliever is thoroughly biblical.