Quotes from your paper. Support OUR postion, not yours, right?<quoted text> From a paper 2 years more recent than yours.
Nine families of chimpanzee endogenous retroviruses have been transpositionally active since chimpanzees and humans diverged from a common ancestor. Seven of these transpositionally active families have orthologs in humans, one of which has also been transpositionally active in humans since the human-chimpanzee divergence about six million years ago. Comparative analyses of orthologous regions of the human and chimpanzee genomes have revealed that a significant portion of INDEL variation between chimpanzees and humans is attributable to endogenous retroviruses and may be of evolutionary significance.
Of the 42 families of chimpanzee endogenous retroviruses identified in this study, 40 were found to have orthologues in the human genome, including 9 that were identified in this study for the first time 
A member of only one class II family, CERV 30 (HERV K10), has been transpositionally active since the divergence of chimps and humans from a common ancestor.