After some research online, I ordered a Pedco Ultrapod I as a replacement. I am quite pleased with this one. It is very light yet sturdy, and easy to set up and adjust. In addition, it comes with a velcro strap for attaching it to railings, tree limbs, etc. Clever design!
This is the second camera accessory I've ended up replacing after buying the first thing I saw in a local camera store. I should know by now that a little online research can pay off.