The explosion wasn't at an actual diaper manufacturing plant, the plant manufactures acrylic acid, used in making a resin that is a component of disposable diapers. Because the plant will not be able to supply the makers of Pampers, Huggies, etc., for awhile, the shorter supply may cause other plants to charge diaper makers more for their product, who most definitely would then charge consumers more. It's the same principle as when an oil refinery burns or explodes...less supply = high prices on gas, in this case it's diapers and pull-ups. And in the case of the Richmond, CA refinery fire not too long ago some gas stations raised their prices immediately upon hearing of the fire, which hopefully hasn't happened yet with diapers.
If we were still using diapers I would probably double up on my purchases, continue to use coupons and shop sales (Target does a deal about once a month where you buy two large boxes already at good prices and you receive a Target gift card for $10 on top of it, plus you can still use any coupons you have) and prepare for early potty training by educating myself on readiness signs and methods now, before I needed them.
Here's the story I found:
http://investorplace.com/2012/10/babies-beware-diapers-ma...
FYI, the very best deals I found were on Amazon. Sign up for Amazon Mom and Subscribe & Save. There are onsite coupons to "clip" at times, and free shipping with orders over $25 or Amazon Prime, the price per diaper is truly lower then anywhere else, I even found this to be true when comparing their prices to store brands.