It's hard to describe, but if I had to summarise the process in one word, MAGIC!
But seriously, I found the bolts had to be just holding on one thread, including the one holding the EGR cooler. From there, get the plate over the top bolt, then it will swing round and drop on the lower bolt with a little jiggle.
I used magic this time and in less than 10 minutes the thing was in and they car back together. (Personally I didn't remove the wipers/panels as there is more than enough space).