Did the rabbit come with a pedigree?
I would be highly suspicious of helicopter ears in any purebred NZ, especially if the breeder showed.
I have only seen the droopyness from heat in very large eared rabbits like Flemish or their crosses.
Pictures of the rabbit properly posed would help determine if the rabbit has the body type of a purebred NZ.
Try saving the picture to your desk top and resize or compress the photo then upload. There are other tutorials on Rabbit talk on how to do this.