The only way you can do it is play thru the entire campaign again/reach the level you where first at until you cleared the save data unless you already had beat all the levels that is the only option at least i can think of.
To be a plasma burst player you must become one with the plasma.
And again, many people have also had this same sort of problem with affects the campaign levels. But really there's nothing anyone can do about it and the best thing to do at the time is try your best by doing the campaign all over again. It's pretty annoying, I know. Take it from a person that already did it 5 times in a row. :T