This have not happened to me before, so I cant say for sure. I don't think the seller can remove the strike. But you should contact the seller and explain what's going on. Because I don't think he knows about this strike. I think the seller could get rid of it if he contact ebay and say you have paid even though you havent payed anything yet. But I don't think he would want to do that. But then again if the items not been shipped, it could work.