Lyric discussion by Special Sock 

Cover art for Homesick lyrics by Spill Canvas, The

after rereading the line about his skin turning black I think I might have figured it out a little better. You call a scape goat a black sheep right? So maybe he kept taking the fall for everything and it made him look bad so other people would stay away from him (take a few steps back.) His ailment is he's a bad kid at school (text book infection) who's sick of it and wants to get out?

The whole push the detonator part is maybe him transforming himself in a way? I still don't really get this. But the garden of broken friendships could be him leaving the friends who gave him the image of the black sheep? Idk