I think you're reading a bit too much into things; his antics doesn't mean he deliberately wanted to lose. If that were the case, he wouldn't have fought off Wiedman's attempts at takedown and would've capitulated in a more 'respectful manner' by letting Weidman take him down and submit him, rather than getting knocked out while clowning. His antics weren't that OTT; he had to go OTT a bit because Weidman wasn't being as easily and as much rattled as the likes of Forrest who were defeated mentally much more easily.
Sure Weidman got thrown off his game with Silva's antics a bit, but he wasn't that rattled and agitated. To me it just seems like Silva's mental ploys didn't get into Weidman's head enough for him to pull off another Forrest/Bonnar win through antics. Weidman's simply on another level compared to these fighters, mentally and physically. In addition, Weidman also said himself that he expected Silva to do those antics and he had prepared for it by having guys do that kind of shit in training to mess with his head. It's just a case of Silva coming up against a much tougher opponent - mentally and physically - than he'd faced before.
You claim that Silva deliberately wanted to lose and yet, on the other hand, seem to suggest that Silva was doing quite well against Weidman (e.g. stuffing his take-downs, messing with his head, and only losing because of a 'lucky shot'). Classifying knock-outs as getting lucky is a bit bizarre to me, it does disservice to many great fighters. It's a major tool in the MMA. In fact, many would say Silva's submission of Sonnen was probably a luckier win than Weidman's KO of Silva given how badly Silva was getting beaten up in that first fight with Sonnen.
