Cool!
Whilst you wait I strongly suggest you soak the 5mm Allen bolt in WD-40, the more the better and let it soak in, then soak it again and again and again!
On mine the side that came apart all nice was the near side that we'd started to work on the weekend before when we were going to split the joints to do the work.
The joint splitter was to small so we couldn't start the work, but I'd been soaking the bolts the night before almost hourly to try and make life easier!
As it was when looking at the corner we worked out that you don't need to split any joint to replace the ABS sensor, so we came back to the job the next weekend and posted our steps and pics to show what we did!
The logic was simple the sensor was duff so no need to be careful with it, so we smashed it out with a big hammer and a solid bar (broken socket bar).
The side we had to put a bolt in was not soaked the night (or week) before it was soaked on the day for an hour or so ... and we had to drill it!
so soak it now, soak it some more and then again and maybe a few times more for luck!!

The job as a whole was much easier than we expected to be honest, the pain was the bolts and not soaking them enough, else it was just messy (grease and brake dust) on a nice sunny day!
