I don't know where you live or where morebeer is located, so I don't know how hot or cold the yeast got in transit.
However, I live in AR and ordered some stuff from Austinhomebrew (TX) and it had to sit on my front porch from 1 to 7 when I got home in the 100 degree heat (stupid UPS). It was shipped with an ice pack, but it was not even moderately cool when I got it. I put it in the fridge and then got it out 2 days later for brew day and pitched the tube as I normally would. Fermentation didn't start for like 3 days and then it needed some good swirling of the primary (about every 2 hours day before it started) to get it going.
Long story short, some of the yeast cells may be dead, but some will have survived. If you want to have fermentation start like it should, do a starter a few days before you brew and it'll be ready to rumble.