We're all behind you?

So.....the tory party conference has just happened in Manchester!
Today Boris Johnson has said that they.....the rest of the cabinet.......were "all behind her".
Now, I'm not a fan, but.....this quote sounds sinister to me....as....if you're behind someone, you're in a perfect position to stab them in the back.

I think that I'll just leave that thought with you.