It turns out that Billy Ray Cyrus’ profanity-laced rant at estranged wife Firerose was all over the country star possibly making a guest appearance at Nicki Minaj’s concert. After a shocking clip of the singer, 62, screaming at his ex was leaked on Wednesday, July 24, sources came forward to provide context around the unsettling audio. The fight between the duo began after Cyrus was “presented with the offer to be a surprise guest” at the rapper’s concert. “He was really excited about it and couldn’t wait for the opportunity,” the insider spilled. “But Firerose didn’t want him to take the offe…