It does make someone feel frustrated when they feel unjustly accused of plagiarism, especially when they have labored over an original idea and tried to create a worksheet-that will be accepted (...and praised -We all love the proverbial "pat-on-the-back"!)
Most of the moderators judge these reported sheets extremely conscientiously. I have noticed that worksheets are not deleted unless there is true verification of plagiarism. The moderators who leave snide remarks in the reported section never leave their names and, for the most part, are not taken seriously.
You will find, Altan, that if you sit back and let things get settled, the right thing usually gets done here.
..........Also, if you act reasonably and politely - you will be treated accordingly.