The October 17 1927 edition of the Toronto Daily Star contained a photograph of an unfortunate young man who broke his neck in July of that year:
Because I am morbidly curious, I looked up the Hoffmans in the Toronto city directory. I found Aaron Hoffman at 263 Grace in the 1928 directory – he was working as an agent for Metropolitan Life. Irving first appears in the 1934 directory, at the same address as his father, and is listed as a tinsmith in the 1935 directory. So he seems to have survived his accident.
His father might not have fared so well, however. He was listed without an occupation in the 1934 directory, and is not listed at all in the 1935 directory. There’s always the possibility that he might have moved away, of course.