Had the same happen on second hand DTM/Deep a couple of weekends back. I tried landing a nasty backhand bash in one of those even nastier competition horrors. The thing buckled upwards on the deck between my feet.
Relatively easy home repair. Cut the loose glass away in a v shape toward the centre. Hopefully the slight V will help feather out the new week/strong spot.
Filled the cut out with epoxy resin saturated with filler. Sanded this back level.
Laminated over a couple of feathered layers of six oz mat. Also added a smaller wrap around to the bottom where the rail had cracked.
Out with the 7' polisher/sander to finish.
Other than the fact I wasn't looking for technical perfection on a second hand board, it came out pretty good. The board flexes even.
Biggest thing is to get the balance between creating a week or strong spot fairly right. A weak spot will break again. On the other hand, the board will want to break either side of an overly strong repair. The later is why I would not add stringers, under saturated filler, or too much glass, or a resin that sets too hard/brittle.
Hardest part with the Sunova would be doing something to match the timber. Permanent marker like I often use on the filler could look ordinary. Not like you can duck around the factory and grab a bit of the timber out of the bin to laminate in like you would matting? This is the complication that may lead to a professional repair?