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. I will wait for confirmation before I believe this fellow was an actual agent.
Hundreds protest by Tel Aviv club where 'rape video' was filmed calling for club's closure (Haaretz)
from the article: Report: Israel offers prisoner exchange for Ilan Grapel