you could send a PM to Nfld_Jib, because he's from there, although I don't know if he's around St John's or on NS much anymore.
Also, Freeskier's 2006-07 photo annual has an article in which Siver (RIP) sent Tim Russell , Dash Longe and Jay Michelfelder to St John's on an urban trip. They photographed 6 different spots in the article and reported to have found many more. Contact me if you head to Marble/Corner Brook at any point during the year. There are a lot of urban options in Corner Brook.