Yep, the blame game was a well learned device for Joseph but I think he also knew just how far that trick would stretch and when to switch things up.
Sometimes, (hoping no one would be paying attention) he would risk actually contradicting himself as in the two scriptures below.
1 Nephi 3:7
"7 And it came to pass that I, Nephi, said unto my father: I will go and do the things which the Lord hath commanded, for I know that the Lord giveth no commandments unto the children of men, save he shall prepare a way for them that they may accomplish the thing which he commandeth them."
D&C 124:49
49" Verily, verily, I say unto you, that when I give a commandment to any of the sons of men to do a work unto my name, and those sons of men go with all their might and with all they have to perform that work, and cease not their diligence, and their enemies come upon them and hinder them from performing that work, behold, it behooveth me to require that work no more at the hands of those sons of men, but to accept of their offerings."
Or maybe this is a subtle way of Joseph throwing God under the bus????
Regardless, it kind of shows how gullible his audience was. Sometimes it takes a little thinking, some time and a bit of distance to catch someone in a lie. It can be especially difficult when you really want to trust that person...

"There is but one straight course, and that is to seek truth and pursue it steadily."
"Truth will ultimately prevail where there is pains to bring it to light."
George Washington