Yes, however the 9's can be parked without having to make lease payments, while a parked RJ - which NWA owns and leases to PCL, CPZ, and XJ all have payments monthly. The DC9 acts as shock absorber, and unfortunately so do the pilots flying them.
I have heard rumored that RA wants to reallocate the DC9's and run them on routes against AAI and other mid-continent flying. As he said in the merger conference calls there is nothing in the inventory between 76 and 152 seats other than DC9.
Despite GL's leanings that somehow your dick size is tied to the newness of your aircraft, or the ability to go direct, the DC9 is still a work horse, and is built like the proverbial brick @hit house - keep maintained and they will go for ever. Let's not forget that it was RA who originally refurbed and renewed the DC9.
I hope the rumors correct, because it represents more jobs for all of us, and I wouldn't be surprised to see even a few Widgets bidding -9 Captain. It's still more fun for some to be Captain of the tug boat as opposed to the second first mate on the Queen Mary