This is about drummer Bob Burns leaving the band due to the stress of heavy touring. After release of the album, Lynyrd Skynyrd started a 90-day 61-concert tour called "The Torture Tour." Ed King walked out during this tour.
An acoustic version is featured on Lynyrd Skynyrd's 1994 album Endangered Species.
Suggestion credit: Aaron - Twin Cities, MN, for above 2
Skynyrd is one band that's familiar with hardship. Al Kooper relates in his memoir Backstage Passes and Backstabbing Bastards that, while he was still in the early stages of taking over management of the band, Ronnie Van Zant phoned him at 2 a.m. This was to report the news that Lynyrd Skynyrd's equipment van had been stolen. They had a tour to fulfill and no equipment. So Van Zant asked Kooper to wire them $5,000 on the spot. Kooper immediately obliged, to which Van Zant remarked, "Al, you just bought yourself a band for five thousand dollars!"