This weekend, I installed ST Suspension / KW V1 coilovers on my 987.2. The install itself took a while but went well, sans for stripping one of the 8mm hex bolts that holds my passenger-side half shaft into the transmission. Do you guys have any recommendations on getting this bolt out? Omw home, the coilover bracket holding my endlink snapped, and my coilover slammed onto my axle. I'm going to try to get KW to ship me a new one but in order to do that, I'm going to probably have to ship this one back to them to get it inspected first. The half shaft has to be removed in order to have enough clearance to remove the strut. I'm going to try removing the axle from the hub as opposed to the transmission in order to get the strut out. But I still need to replace the axle as I am sure it is damaged - and for that I need to remove the bolt.
Here is a picture of the bolt, circled in yellow. Again, it takes an 8mm hex.
Things that I've tried:
-Using an 8mm ball joint hex (not catching)
-Torx T50 (not catching)
-Hammering a 9mm hex onto the bolt (too big)
-Drilling into the bolt and using an easy out, but I'm not having luck making a hole, even with high speed bits.
Also, if anyone recommends a particular vendor / site for picking up another half shaft, please mention below. Any help is much appreciated!
Here is a picture of the bolt, circled in yellow. Again, it takes an 8mm hex.

Things that I've tried:
-Using an 8mm ball joint hex (not catching)
-Torx T50 (not catching)
-Hammering a 9mm hex onto the bolt (too big)
-Drilling into the bolt and using an easy out, but I'm not having luck making a hole, even with high speed bits.
Also, if anyone recommends a particular vendor / site for picking up another half shaft, please mention below. Any help is much appreciated!