I know Jacques Hétu's music fairly well (and I'm not Canadian!), and it is indeed interesting to hear the work which, ironically, is one of his most popular, due in part to Gould's recording of it (and a live Hamelin recording which circled the internet). Hétu usually composes in a rather neo-romantic style which doesn't always appeal to me. However, I absolutely love this work, for it is an example of just how emotional and visceral 12 tone music can be when written and played well (contrary to the rampant misconceptions that 12 tone music is always noisy, dissonant, boring, and unemotional). I personally think that Hétu shouldn't have discontinued using the 12 tone language in his later music. It would make his later works more interesting, heh.
On to the criticism of the performance: This is played extremely well, and there isn't much I can point out that is wrong. However, it does sound like the Hamelin recording was a huge source of inspiration for your interpretation of the work. He isn't a bad pianist to take after, though! Both his and your decisions make this work interesting enough to even the most novice listener. I even noticed that rachfan, who usually shuns "atonal" 20th/21st century music, even commented on your playing, which rather surprised me, but it probably comes more from the fact that it is played so well. This is actually a piece I plan to learn in the future, and this recording has helped motivate me toward playing it. It seems really straightforward musically compared to a lot of 12 tone music because of how visceral the music is.