Hi Kristen,
When my brushes start misbehaving the first thing I do is wash them with a brush cleaner — I use Master’s Brush Cleaner. I think of it as them having a bad hair day! Also sometimes when they are new brushes have sizing in them to help keep them together during shipping and that can make them misbehave as well — so they get a good cleaning with Master’s again. For really stubborn brushes I will load them up with the Master’s brush cleaner and shape them into a point, then let them dry overnight and rinse them out really well in the morning.
Also, when brushes are really sopping wet I usually flick them hard in the air to shake some of the water off and then they snap to a point.
Hope that helps!