It was originally 99, but was reduced due to that solution being somewhat fiddly. Some other layout changes have actually made RR99 not too bad, although there's still a backroute.
I've made some changes to this level that eliminate the backroute in question, and set the RR back to 99. There's still one solution to this version other than the intended one, but it's very tricky to pull off, and even if someone were to find it, I feel it still highlights the same aspects of the Disarmer skill that the intended solution does.
Updated the download in the first post to have the fixed version of this level, as well as to include the Sega style so that Objects 8 is playable.