It doesn't sound like enough to go on for me to believe that's really their plan. Fabbro played really well last year, and yet before the season even started it seemed like they had hatched a plan to reduce his role and minutes, and I don't see how they could have thought that would inspire confidence or make him feel like he could take more chances? And then when he did get to play something like his old role and minutes for those 5 or 6 games or whatever it was that McDonagh was hurt, I thought Fabbro started to look almost immediately like his old self again. Then he was right back down, and even worse scratched. It still doesn't seem to add up to me.
Also if Fabbro is a conscientious and intelligent defender in general, which he seems to be, and if Lauzon has some lapses at times, you would kind of expect Fabbro to be trying to help cover those, not suddenly jump up and become another offensive guy and exacerbate things.
He also gets like zero PP time. Not even the token 2nd unit stuff that Carrier sometimes does, and certainly not the spotlight usage that Gross got when he was up. I would think if you're trying to inspire a little offensive progress in a player, maybe you at least occasionally put him on the PP?
Through it all, Fabbro has seemed to retain some slightly decent metrics, like last time I looked he was still a bit on the positive Corsi side, while the replacements were generally getting caved in. So again, even if you think he could benefit from a chance to watch the game from above... we're in a playoff race here, and putting minor leaguers who are getting hemmed into their own zone onto the ice instead of a guy who is statistically holding his own is kind of a weird call.
I dunno, Hynes throws out some pretty big word salads when he actually is pinned down to talk about anything publicly, and I think I'm learning not to take much of what he says seriously. The way he talks, you kind of want to start nodding your head with what he's saying, but then when you step away and look at games it's hard to see the correlation. If he talks as much as I imagine he does to the players, I can easily see them getting some mixed messages trying to decipher it all.