my main minting wallet was on the fork too i didnt mine at that pool
it was not local only connected to us.miningfield

west US backbone node and my minting wallet where affected too
when i was in fork i had never above 5 connections

so it was most likely just a handful wallets affected

ur between the line guess about attack origin i strong disbelieve there would be required skills to try such thing

reorg can work backwards far more than one block as i said before i tested once with over 600 blocks which did reorg back to mainchain