Massage makes muscles hurt more?

[Dr.RVs]

For example, at a dance class, we had to do this thing where we would let our neck go completely and the other person would kind of roll it around in their hands. (This was to loosen up our neck)
The teacher came over to see how we were doing, and he said I was really tight, so he did that again with me and then briefly massaged my shoulders (for like 20 seconds)
But today, my neck and shoulders absolutely kill!
After the class I felt fine, and it wasn't to difficult, what happened?