Mariah has been in the business faaaar too long for anything to justify what happened tonight. every singer has dealt with technical difficulties and having their ear piece not functioning right. a real professional would work their way through it as best as possible even if its not completely perfect.
Mariah didnt even try...even on WBT...she gave up. something MORE is going on. she already had that mental breakdown in 2001 and has been said to be an alcoholic in recent years...she needs help.