Things got so bad that Frusciante was starting to isolate himself from the rest of the band while on tour staying backstage with his girlfriend at the time beginning his own drug problems, which were unknown to the band at the time.
Frusciante was starting to isolate himself from the rest of the band while on tour. This tour was staying backstage with his girlfriend at the time. This time was beginning his own drug problems. Things got so bad this. His own drug problems were unknown to the band at the time.