They still have it. It is still on Thursday mid day. It's like right at the main steps in the pool to the right of the bar. The pool is so big that if you don't like the foam, you can still be on the end of the pool and not be affected.
I wonder if they figured out how to get the residual foam left over after the foam party out of the pool? When we were there for the first week back in August, it appeared they were having issues getting the foam to go away. It was collecting in the fun holes at either end of the pool and kept foaming up.