If you cross reference team in the league who are in playoff contention, with those that are middle of the pack in goal scoring, and who have a lot of cap space you're left with a handful of teams that COULD be willing to take a gamble on Sammy. Especially considering his salary will be prorated so they'll end up paying him less than his 3 million. Among these teams are Nashville, Ottawa, and Calgary. If you add in teams with significant injury troubles (admittedly I haven't looked for these) you've got another factor. Power play troubles...another. Overall young team...another.
I'm not saying that he'll definitely get picked up. But to say he has no value is more a commentary on your feelings about Sammy, and less about his potential worth. Particularly in a league which saw the New York Islander's trade for Tim Thomas specifically so he WOULDN'T play hockey. Value is relative to each specific club, and there are 29 others besides the Detroit Red Wings.
If there was a chance we could waive him and someone would pick him up, the Wings would've done that before trying to use their buyout on him. Furthermore, even if he did not have a no trade clause, no one would even give you a bag of pucks for him, this isn't anti wings bias, its just hockey sense.
Remember, even if its slightly under 3 million pro-rated, that is still real money that someone has to pay. The GM's have to answer to the owners and no owner in the league is going to be happy about bringing in a guy that will cost nearly $3MM in cash when there are guys that can do the same thing for far less.
If your point is that crazy s*** happens, yes I'll give you that. But I guess if some team needed to increase their cap hit ala Tim Thomas, they would've messaged Kenny by now and said hey waive the guy, we'll take him. So the fact that he hasn't been waived means no one has done that.
I guess at the end of the day this is sort of a pointless argument. But my end view is this...if Kenny had an inkling that someone would take the guy on waivers (and he'd know way better than we would) the guy would've been on waivers by now. But I believe that Sammy is as close to a guaranteed waiver clear as you can find in the league.