unmerge

Un-merges any merged cells which are included in the range.

    <div id="spreadsheet"></div>
    <script type="text/javascript" charset="utf-8">

        $("#spreadsheet").kendoSpreadsheet();

        var spreadsheet = $("#spreadsheet").data("kendoSpreadsheet");

        var sheet = spreadsheet.activeSheet();

        sheet.range("A1:B2").merge();
        sheet.range("B3:C3").merge();
        sheet.range("A1:D4").unmerge(); // this will unmerge both merged cells.
    </script>