It's known that in December 1973 an off-stage fist fight between Blondie and Steve Love caused Blondie to leave the group right after. (note: according to AGD's website after the Madison Square Garden gig on Dec. 19th.)
From what I remember Steve's version of the story is that it had to do with Blondie's drug-use, according to Blondie it had to do something with someone calling him nigg*r or something similar.
According to the bellagio-site (
http://www.btinternet.com/~bellagio/gigs73.html) the Winterland-gigs took place in November 17th and 18th.
Would be interesting to hear more about these final days of Blondie in the band. Do you have more memories of this Winterland concert, jimmyboy?