Yeah, that was definitely just Tre's ex-wife and I think it was confirmed it wasn't true, it's a shame that's still being spread around.
And I went to a lot of shows on the 2009-2010 tour and even in hindsight, I honestly don't think there was anything noticeably wrong with him. Obviously he's said he was struggling for a long time, but I wouldn't say it showed to the extent that it was clearly visible until the South American tour (though he still seemed to have a great time in Costa Rica) and then 2012. I really don't think it's anything we need to worry about, he's sought help now and like Hermione said, we don't know exactly what/when his issues were anyway.