Update, I've glued each side by opening up the cracks and in absence of a syringe have used a straw to blow PVA deep into the cracks flooding them them clamping and leaving for 24hrs. I only did one side at a time. Tonight I drilled and inserted dowels, on 8mm and one 10mm, will leave them to set for another day before cleaning the bat up. I will finish off by binding the top of the blade with fibre tape and re gluing the labels on. The free hand drilling went well on the lower hole, came out slightly off centre on the other just breaking through the back of the bat.
Although illegal what are people's thoughts on putting a screw in each side at the top of the splice?
Below shows the the bat and dowels, the clamp is just holding in a small chunk of re glued wood that popped out when I pushed the dowel through.
I'm still expecting this to explode after the first shot in anger.