I don't usually stick my nose into C&A cases, but for whatever reason I was curious, so I had a look.
NutCrusher and dx87 have played together 198 times. 192 of those were Dubs games, with only 3 Standard and 3 Terminators. 4 of the 6 non-Dubs games were at the very beginning of their association. One can't completely rule out the possibility that there was some secret diplomacy in those first few games: they joined those games sequentially and probably knew each other right from the beginning. Still, nobody is going to reopen a possible case of SD from 2008.
The very last time they joined a non-Dubs game was in May of 2010. Since then, they have joined nothing together except Dubs games, so any possible SD accusation is almost five years old and not going to be prosecuted at this point. (Even if it did have any merit, and I'm not saying that it does, only that it can't be ruled out.)
192 games as Dubs partners probably means they were friends at the very least, but by definition partners can't be engaged in SD. The other half of the accusation is that they were multies. Let's look at that one.
In addition to their games together, NutCrusher played 220 games without dx87, and dx87 played 598 games without NutCrusher. Doesn't rule out the possibility of them being multies, but makes it seem unlikely. They both have a location in the American midwest, although one is flying the Japanese flag at the moment. Supports the idea that they're friends but not multies.
The final (implicit) accusation is that this represents deliberate deadbeating. Since dx87 has not been onine since he began deadbeating his last set of games, it seems unlikely to be deliberate. Most likely, this is simply a natural end to a long and perfectly normal CC partnership. One partner has left the site, and it looks like his friend may be bored and soon to follow, but there's nothing nefarious going on.
Case closed...