Ah ha! Couldn't find the original site I found the directions on, but I found this site that listed the same ones, minus the part about the trackball. Except this site calls the process a hard reset instead of a soft reset:
Hard Reset HTC Droid Eris
I should add that nothing in my phone was altered after I completed this process (as in, the above site claims all data will be erased off the phone), Of course I'm not sure I completed it successfully since following the "directions" the phone is supposed to give during the process was a bit confusing.
Now I'm really mixed up... Hard reset, soft reset... these terms seem to mean different things to different people. Help!