Stone Temple Pilots singer Scott Weiland's wife Mary has spoken out about her erratic behavior last weekend, blaming the hotel trashing and fire-lighting incidents on bipolar disorder. "The weekend's difficulties were brought on by a reaction to an imbalance in medications used to treat my bipolar disorder," Mary Weiland said in a statement. "Scott was simply trying to help calm me down. I want to make it clear that he did not hurt me in any way. For lack of a better expression, I was unstable and just lost it." Weiland added that she has "a loving husband, drug-free for 3 1/2 years now, who is able to care for me during this challenging time." She also says the couple's two children did not witness "any of these events."