At the expense of starting his contract early, no. If you're starting him at the AHL level, you're already saying he needs time to develop so keep him there and let him work on that instead of worrying about NHL responsibilities on a losing team. Sure, give him his nine games at some point but I see more value in picking one or the other and keeping him there to figure certain things out.
The premise for my statement is that they don't think he's ready for a nine game NHL audition that typically happens to start the season. If they don't feel like he's earned that, you might as well defer the start of the contract and let him play the whole season there. Maybe late in the season you can pick out some games where the other team really needs the points and you can get him some experience in playoff-like games but that doesn't seem an option used at all for these sorts of situations. If the Sharks need a call-up down the road, it should be the vets they recently brought in like Suess, Agozzino, and Veronneau. Maybe Weatherby since he has experience playing lower lines in the NHL but I wouldn't want to bring up the kids to fill depth spots in injury situations.
I think the difference in risk as it relates to sliding it or not is pretty negligible.