Hello, you cannot, but you can try code like (not tested):
wManager.Plugin.PluginsManager.DisposeAllPlugins();
wManager.Events.PluginEvents.OnLoadPlugin += delegate(string pluginfile, CancelEventArgs cancelable)
{
if (pluginfile == "plugin file name.cs")
{
cancelable.Cancel = true;
}
};
wManager.Plugin.PluginsManager.LoadAllPlugins();