we are still trying to figure out if it was an accident or an attack on purpose. this has passed now.
at this point it doesn't matter... forking is dangerous regardless..
any pool that has too much power that claims "we wont hurt karma" doesn't realise that they already are hurting karma.
it may have even been just a test to see how reactive the exchanges and community are.
the exchanges seem to have reacted well but mining community needs to get over to P2Pool pools asap.
if you are a miner and you do not use a P2Pool implementation then you are contributing directly to the increased likely hood of next attack.the community needs also to seriously consider having some reserve hashing power to bring online in case of emergency.
and possibly the dev team could look into developing a way to easily ban the nodes of bad actors through community effort. I might look into this as part of a project I am working on. This would not stop such attacks from happening but could in theory slow down their ability to propagate transactions through the network making it harder for them to pull off.