I'm not quite sure why anyone thinks this will affect the status of Stanton or Sbisa. Desjardins has shown that he rigidly keeps defensemen on their shooting side. Has there been even one instance of a guy playing his off-side this season? Even Vigneault deviated from time to time when he had to.
If Clendening was acquired to play now, I'm not sure I get it. Are you going to get an upgrade over Yannick Weber, who has been decent this year? If for some reason you want to pull Weber out, why wouldn't Sanguinetti have been given a chance (apart from the fact that it would decimate Utica's blueline further)? Is Clendening an upgrade on Sanguinetti right now? I would say almost certainly not.
I don't mind the trade given the odds with respect to Forsling (it being Chicago, though, Forsling is now basically guaranteed to be awesome), but let's temper expectations a little bit here. Clendening has put up some nice AHL numbers, but if his defense is at all suspect, the coaches and fans alike will devour him. We saw it with Marc-André Gragnani and hey, look at that, Yannick Weber, who is even the same height. Guys who also put up big numbers in the AHL and have not been given much of a shot due to their defense (even on the power play for some reason). Sanguinetti has to be thrown in there by default, as long as he hasn't been given a chance, though it's not clear to me that his defense has ever actually been an issue.
Is there reason to believe the situation will be that different with Clendening, apart from a conscious effort to make Benning's acquisitions look good?