SF have lost a few, it's true, and I suspect there is an issue with party expansion coming up against internal culture. It's hard to maintain at this point the same level of discipline which characterised SF as an embattled political wing of a paramilitary group. But having said that, the loss of a handful of councillors is small stuff. SF's biggest problem in the south is that they are prepared to sell out their C2DE support base in order to share the trough with FFG - they will never win over the ABC1s, and they can only alienate the C2DEs.
Handfull ? will try to get exact figures which would indicate either that you are wrong or you have huge hands.