This fellow does not seem to be Mossad material, nor would his actions fit Mossad. To tour Egypt and make observations, Israel has enough personnel in Egypt to do, even some with diplomatic immunity. And a Mossad agent will not get involved in demonstrations. Also, lying in the past (in Tel-Aviv) about his religion, then enter as a newsman with the same name is unnecessary with potential troubles in the future. Perhaps Grapel the Schlemiel was seeking some thrills.
U.S. says working on initiative to de-escalate Syria fighting, with focus on Aleppo (Reuters)
from the article: Egyptian judge denies plans to charge American-Israeli accused of spying