That's the video which made me realize for certain that the Church wasn't true. I realized that if the Book of Abraham was a fraud, then likely so was the Book of Mormon.
I was also really angry that they knew the truth about 10 years before I was even baptized, and yet they still put forth the BoA to me as scripture.
It began the search for other problems with the Church, and when the list of problems got as long as my arm, any lingering doubts whatsoever were erased and I KNEW the truth. Not in the way that they use the word 'know' but a real knowledge based on evidence, rather than on warm, fuzzy feelings.