Healthy happy yeast pitched in the right quantities do that, and true top fermenting yeasts like WLP023 are particularly messy. The good thing is it spews out the trub thrown up with the yeast head, the bad thing is you get to clean it up...and clean it up....and clean it up.........(or you can use a blow off tube).
I just let the yeast do it's thing, I often get my yeast from the Ringwood brewery and it makes a heluva mess but it also makes great beer
btw I have some WLP023 on a slant in the fridge, i'm looking forward it soon.