You are ignorate as hell there. Hop on my server and try to dupe you will find that I have them fixed (only 2 which are not and I just have a small workaround that makes them do nothing while I work on the real fix). Part is you cant touch alot of it from bukkit side as I tried as a quick fix when 1.0.1 came out before I just made the bytecode patches. Mods follow forge's API and some do alot of their own storage/memory management so there is no real access unless you try to hack into it with an NBT editor api but that kind of editing usally leads to more issues then solves.
Yours is illegal, you touched there code. Thats what makes them mad.
My plugin runs fine and does NOT make any issues