I have never encountered this with Hobbs polydown. I would let it relax overnight. If you are quilting by hand or on DSM (without a rack) it should sandwich up no problems.
They have an 800 number you can call them.
http://www.hobbsbondedfibers.com/contact.html
Edited to add, I think you will find Hobbs to be much more forgiving of manipulation then cheap batting. So if you need to smooth it you don't have to use a really gentle hand. It can be man-handled pretty roughly without tearing and I have given it some pretty good tugs without it tearing as well.