Boy I want to read that article
> In basic terms, Disney Infinity and Cars 2 do a very specific amount of writes to lower MEM1, where a lot of really important data is stored. But, it writes just enough that the CPU doesn't flush it to MEM1; it remains in the CPU L1/L2 caches. It then tells the CPU, nevermind and invalidates the CPU cache. Thus, even on a hacked Wii this would do exactly nothing; it's specifically targeting a weakness in emulators.
> Emulating the CPU cache in Dolphin would likely slow-down Dolphin by a factor of ten or more. While we prefer not using hacks to "fix" games, we found it to be permissable in this case due to how specialized of an issue it is. Even if the L1/L2 caches are implemented in the future (which is definitely a possibility,) it will likely be something only used for testing, and thus this hack would remain so that people could actually play these two games. It's a compromise, one that no one is entirely happy with, but the game behavior necessitated it in this case.