The gemara and tosfot there don't seem to mention Aleinu at all. Is this meant as a comment on ShimonbM's answer, as it does provide relevant background information to it? — Double AA1 hour ago
@DoubleAA It could be a build off of ShimonbM's answer. If others agree, I will migrate it up. I felt that first we have to see if spitting in shul is allowed stam, and once it is then we can move from there. — mochin rechavim3 mins ago