Is damage control underway after Justin Bieber and Usher's reported blowout? Over the weekend, reports surfaced claiming the Somebody to Love collaborators got into a "heated exchange" at Beyoncé's Oscars party. One source told TMZ the alleged altercation was all words, while another claimed it eventually crescendoed in fists being swung. An insider later told DailyMail.com J.B. and Usher's confrontation stemmed from tense feelings about their long history. As fans know, Usher was part of Justin's career from the earliest of days...