Rippa, I believe the second video here may be the one you referred to. The first one shows the explosion just off the left side of the screen, but it clearly lights up the sky.
http://g1.globo.com/Noticias/SaoPaul...4-5605,00.html
BTW, a slight correction to some earlier information here -- reg was
PR-MBK, not PT-MBK. Previously it was N454TA with TACA and VN-A168 with Pacific Airlines.