I've tried luring... no such luck in any version. Its all about the numbers and their own "goals" and, if you own somebody's old castle, he will probably show up and try to take it back sometime.
Yes, .960 intentionally cuts the "waiting" time for a siege assault in like... half or so (and although there is a bug that makes losing sieges hard to do (lol yeah), now, sieges are MUCH better, in that just because you get knocked out in a siege defense, you don't instantly lose the siege).
Plus .960 has some VERY good features, such as Imprisoning your Lord Prisoners, stationing your heroes and LESS bugs. I'd recommend keeping .955 for mods (if you mod), and come on over to .960