Frontman posts pictures following accident saying he is in "incredible pain"
Bradford Cox's band cite 'unforseen family circumstances' as trek is axed
The Breeders, Atlas Sound, No Age and The Black Lips all play the bash in Camber Sands
Band also offer up a free download from new album 'Halcyon Digest'
Gig-run will begin in Manchester on May 4
Simpsons' creator expands the May bash's line-up
Bradford Cox puts out 'Logos' next week (October 19)
The bands will alternate songs on joint jaunt
Atlanta five-piece will unveil 'Rainwater Cassette Exchange' in May
Atlanta band set for May jaunt