How did that happen then - not rough or that windy- Multi hulls are fast but do they usually nose dive like that in those conditions- or is it a photo shop job.
Bearing a way at speed pushes the bows down quite considerably - then if at the same time you run into the back of a wave you get something like the photo.
When fully powered up down wind you bear away in the gusts to keep the boat upright laterally - if you do it or are forced to do it too quickly you can very easily end up burrying the bows into the back of a wave. Getting the front cross beam competely under water is perfectly normal - if you were not going over 20kts you might get lucky and just stop very quickly upright!
I have done the manouver in the photo many times......
Too much speed, in the wrong place and at the wrong time.
Like driving a Porsche 911T, there's a lot of extra performance there, but you need to learn when to take your foot off the 'go' pedal - otherwise you end upside down in a field.