Separate Search results by Post Type

Hi Guys,

I am trying to figure out how to display a grid format search page. I am getting close. I have the grid format thanks to a few threads around this forum regarding changing the search.php file (in child-theme of course) however I am trying to run a loop for each post type on the avia_post_slider object however cannot seem to get it to work. Code snippet below..

global $posts;
					$post_ids = array();
					$post_types = array();
					foreach($posts as $post) {
						$post_types[$post->post_type][] = $post->ID;	
						//$post_ids[] = $post->ID;
					}
					
						if(!empty($post_types)){
								foreach(array_keys($post_types) as $ptype){		
										echo $ptype;
											// postslider.php filter 'avia_post_slide_query' $query, $params	
											$args = array(
														'type' =>'grid',
														'items' => get_option('posts_per_page'),
														'columns' => 4,
														'class' => 'avia-builder-el-no-sibling',
														'paginate' => 'yes',
														'use_main_query_pagination' => 'yes');
														
														
												$query = array('custom_query' =>array('post__in' => array_values($post_types[$ptype]),
																			  'post_type' => $ptype,
																			  'orderby' => 'post_type',
																			  'order' => 'DESC'));
										
										
											$blog = new avia_post_slider($args);
											$blog->query_entries($query);
											echo "<div class='entry-content'>".$blog->html()."</div>";
								}
						
									
						}
						else{
							get_template_part( 'includes/loop', 'search' );
						}
						

Also a screenshot here:

http://imgbox.com/zHynwxrp