One of the guys on here Westy has posted a video of a 450 heli blade giving up and flying past him and through his window of his truck, Tony has had a clone tail blade nearly hit him in the face when it broke, blades are dangerous, if the safety of the people around you or yourself is of no consequence fly with broken blades, otherwise order new, wait and be safe,
It's just my 2 cents, but I know what I would do, sorry if I sound harsh but safety in this hobby is paramount to enjoying it.