Was Marcello's save and replace tactical?

[FromBB8]

Have seen this brought up a few times so thought I'd create a new thread to get wider opinions. Do people think Marcello's vote was tactical, as he sees Khaled as more of a threat than Thomas to win the show? Or was he being completely honest with his reasoning?

[GoldHeart]

Yeah it sounds tactics & dumb, he screwed Khaled over .

[GlitterUK]

He knows Khaled is a threat.