After being criticized online for his performance during Journey‘s recent appearance at Rock in Rio, lead singer Arnel Pineda says he’ll quit the band if enough fans vote “go” on his Facebook page. Journey performed at the annual Brazilian festival last Sunday (Sept. 15), and video of Pineda struggling to hit the right notes was circulated online. “No one more than me in this world feels so devastated about this,” the singer posted on Facebook. “It’s really amazing how [a] thousand right things you have done will be forgotten just cause of THIS… and of all the place[s], it’s Rock in Rio. Menta…