Seeing as how the sun has flares that are wider across than the earth is, I don’t think it would do a whole lot. I’m on the fence, though. The surface of a star is the way it is and where it is because of two things: the immense pressure of the nuclear furnace and the immense gravity holding it together. Those two things basically fight against each other and determine how far out the surface of the star is.

I have to wonder if disturbing that equilibrium just for a second might cause a little “burp” or something.