Undbind bootstrap 3 modal call from a link after first click

Question

Use jQuery and remove the attribute data-toggle

$('#mzlink_123').attr("href", "http://www.some.static/site.html");
$('#mzlink_123').removeAttr( "data-toggle" );

If you want all the html code, here it is:

<!DOCTYPE html>
<html>
    <head>        
        <title>DEMO</title>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0"> 
        <link href="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" media="screen">      
    </head>
    <body id="home">
        <a id="mzlink_123" href="/merken/123.html" class="btn btn-info" data-toggle="modal" data-target="#myModal"><i class="icon-white glyphicon glyphicon-list-alt"></i> Merken</a>

        <!-- Modal -->
        <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
            <div class="modal-dialog">
                <div class="modal-content">
                    <div class="modal-header">
                        <h4 class="modal-title" id="myModalLabel">Modal title</h4>
                    </div> 
                </div>
            </div>
        </div>                
        <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js" ></script>
        <script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>  
        <script type="text/javascript">
            var count = 0;

            $('#mzlink_123').on('click', function(){
                if (count == 1){
                    $('#mzlink_123').attr("href", "http://www.google.ro");
                    $('#mzlink_123').removeAttr( "data-toggle" );
                }
                count++;
            });
        </script>      
    </body>
</html>

Jsfiddle code
Jsfiddle result

Note that jsfiddle blocks the redirection to another website, that's why i added the entire html here so you can copy paste into your file and make it work without any modification.