hola Al Habeshi,
no, it is not that simple. i memorized the bible but not with total recall that is impossible.
total recall is like having any bit of information available with 100% accuracy at any given moment: like what is the capital of Mexico? Mexico City, in this context it would be like asking "what is John 1:13" and being able to answer completely and with no words incorrect. that is impossible... and that is why i am skeptical about this individual because that is essentially what is being suggested here...
i would have to start from the beginning of John and remember all the way up to that point, before speaking... it was like a domino effect, i would remember in a chain. this is actually very time consuming and tedious but quite easy to do... by the time i was finished i did not have 100% memorization, i am sure i stumbled over adjectives or prepositions and minor things like that occasionally... there is no way of knowing.
today i remember many bits and pieces... usually passages that i thought were very personal or moving, or passages that i hear a lot... much of the new testament i remember. i do not remember the entire bible though, the first things i forgot were lists of names and locations... geneologies are extremely difficult and since you have no need for them you rarely refresh your memory and they fade quickly. the stories in judges and during the two kingdoms i forgot next because i have never enjoyed those stories, then i forgot the deuteronomic laws that do not really affect my life, some of revelations, and it deteriorated from there...
i have not forgotten it all, just things that i had no use for and never revisited again.
Dios te bendiga