I cannot log into my Minecraft because of a texture pack

I cannot log into my Minecraft because a texture pack made my game so laggy that I cannot play it.

I expected it to take a little while and then it will fix itself.
I think what should happen is when that happens Mojang should fix the problem right away.

That the texture pack made my game so laggy that I could not play it.
The texture pack with the name of LB photo realism made my game so laggy that I could not play it.

I do not know how to fix so I came to this website.