“It was pretty much done, it was in final [quality assurance testing],” Free Radical founder and former studio director Steve Ellis told GamesIndustry.biz in 2012. “It had been in final QA for half of 2008, it was just being fixed for release. LucasArts’ opinion is that when you launch a game you have to spend big on the marketing, and they’re right. But at that time they were, for whatever reason, unable to commit to spending big. They effectively canned a game that was finished.”
They also say the controller mapping is a challenge in the emulation software, but doable. It's the wii version so I bet the aiming and whatnot is going to be wonky when using a controller or kbm vs the other releases.
Worth noting that the wiimote just uses Bluetooth, so it doesn’t take any specialized equipment to connect to your computer. And Dolphin has built in support for it. The sensor bar was also just a pair of infrared LEDs; All of the actual “sensing” happened at the wiimote directly. So you can just throw a wireless sensor bar (like $15 on amazon) underneath your computer monitor, and it will work fine.