i had a delta ticket for travel from india - us & back for next week, with a couple of flight being operated by 9w....i called delta last night to ask them if i could switch the 9w flights to another skyteam carrier....they said they were aware of the 9w situation & were no longer selling tickets on flights operated by 9w....they managed to switch over the 9w flights to af & az without any penalties....
i would suggest all those who are schedule to fly 9w on delta ticketed flights, to call delta & see if they can change your flights to another carrier....