The explanation is as bogus as the voting. They screwed up and documented their own fraud, now they are using lame excuses to cover it up.
Pages 1 and 2 of the document list “cards counted”, which resulted in the abnormal-looking 141% “turnout.” Those numbers appear that way because it’s an automated process - every time a ballot was fed into the scanning machine, it is recorded as a “card counted”
The rest of the report, where votes for individual races were recorded, looks much more normal - in the neighborhood of 70% turnout. For example, if you look at page 4 of the report, you’ll see that out of 175,554 registered voters, there were 123,591 votes counted for President/Vice-President (equalling a turnout of ~70.4%). This is, of course, consistent with the point that the 140% “turnout” reflected the fact, because of the length of the ballot, there were two different ballots issued to each voter. 70% turnout * 2 ballots = 140% “turnout” (where “turnout” = ballots/voters)