Snapped of balljoint bolt in knuckle

[Davee]

BMW X5 E53 3.0

I needed to replace my thrust strut bushing this weekend. however have run into a problem. Got the thrust arm an balljoint out while undoing managed to snap off the bolt that hold the ball joint to the knuckle. To make it worst snapped one bolt in each knuckle.

Drilled a hole through the bolt to use an ezy-out but now concern that the bolt must be torqued tight therefore the ezy-out might snap as well.

What are my options:
Give it a go - and hope the bold comes out.
Remove the whole knuckle and drive shaft and take to a machine shop to get the bold out.
Get a second hand knuckle.

Any ideas would be appericated.... what a pain