I was right!
Looks like the Luna Moth Shawl's colors ran after all. It's a good thing I decided to be super careful and lay down plastic sheeting under the blocking towels. In any case, I soaked it 20 minutes in warm water and then carefully pinned it to size. I think it could have gone larger. In fact, I know it could have. But I just blocked it to the size recommended (75x46) I can't wait to see how it turns out dry :bounce: I'll take a picture once it's dried.
*edited to add - Now I'm beginning to wonder how long it is going to take for this to dry. Any ideas? Anyone? Anyone? Beuller?