I will repeat it again. I think CO did a very bad job of reaccommodating passengers on Friday. It seems to me that CO should have looked at both NW and DL flights and rebooked as available (if all CO flights with alternative routings were sold out). The hurricane only affected the IAH area. I can not believe that all NW and DL flights were sold out on Friday am at 6am. Whether the flights were code share or not, NW and DL are CO partners and CO should have reaccommodated on those partners or at least looked at their availability. CO did neither in my case.
I do not know why CO even has a relationship with NW or DL (other than NW put up money at one time and has rights over CO). These relationships are so weak they are worthless. Certainly this coming winter NW is going to have some snowed in airports and would want to reaccommodate their passengers on CO.
Hopefully in the end, with more consolidation, a small player like CO will be combined or absorbed and be part of a very large carrier.