OK, if someone else have this problem too, here is the solution. As you see above in my previous post i was using this style to make instance:

$grid = Bvb_Grid::factory('Bvb_Grid_Deploy_JqGrid', $this->_config, 'abuses');

and here is the right way, and it works now:

$grid = new Bvb_Grid_Deploy_JqGrid($this->_config);