Yes oompa, the JW house is indeed built on shifting sands. But somehow they just keep rebuilding their sandcastles.
Jeffreywhat seems to have included some things from this thread: http://www.jehovahs-witness.com/12/153571/1.ashx . Losch wasn't basing his talk on what was in recent publications, he was reveling in his abilities as the mouthpiece of Christ. I need to add some more comments over there.
I'd add to the list, the obvious youth and inexperience of the Governing Body of the Faithful & Disgraceful Slave "Class" contradicts decades of previous teachings.
In the years leading up to 75, they had the dates and details figured out. Chronology, the King of the North, the generation, the sheep and the goats, etc. But the big A didn't come, so they had to scramble. In the 80s, they got things somewhat rearranged. But again, time passed. The 90s and the fall of the USSR, more changes to be made, but they kept the growth coming in and the end was sooooo close. Now another decade is passing, and they have painted themselves into a corner. The changes such as anointed ending 1935, the generation, the King of the North, etc have zero clarity now. With their terrible batting average, they've retired to the dugout about any prophetic forecasts and just shout, "It's sooooooooooooooo close! Y'all just keep preaching or you'll die at the big A !"