All the bosses are pretty easy with current gear levels. I keep saying they should scale your gear to something like 500 ilvl max, so this solo content remains challenging even in the next patch. I actually had a lot of fun progressing these rare bosses in 500 ilvl, every single mistake meant wipe or hitting the enrage timer. In 5.3, I just facerolled all of the new bosses in one evening.
For Disruptron, I learned how to jump from this video:
http://www.youtube.com/watch?v=AH0q-XqWNQw
Just save all your cooldowns + lust for last 30%.