It should be possible to hack into the Wiiware TMI WAD files shouldn't it? You can already hack a Virtual Console WAD file and replace the ROM with another ROM of your choice. I imagine it'd be a similar procedure to extract the actual TMI game from the WAD file.
"Booyah! Look out, LeChuck! Here comes Guybrush Threepwood's glowing sword of hot monkey vengeance!"
-Guybrush Threepwood, Tales of Monkey Island