An example of weird diyukim is the idea that the ramban meant that Hashem might revive one person, moshiach, before everyone else. He doesn’t say that. He’s writing a letter explaining techias hamaysim and says that Hashem can revive who he wants when he wants… He’s referring to tzadikim as opposed to just anyone, or people like rebbe zeirah, who were revived, but he is not talking about moshiach, who must fulfill his mission in whole.
Building the idea of what this kuntres calls “techias protis” is just not a diyuk; it’s his religious fantasy.
That’s just the first thing that comes to mind… He also butchers rashis 2nd pshat with some non kashas and non diyukim, to deviate from the simple meaning that rashi learns that the gemara is not literally talking about moshiach coming from maysim, but rather is discussing what moshiach will be like.