Why does "Show" Segue Update UITableViewCells but not reloadData()?

I have a problem which iv been dealing with for a long time just never got around to seeing why.

Problem

I have a UItableview and load data into it from Firebase. When I segue "show" from ViewController #1 to ViewController #2 (with the UITableView) the firebase data is loaded into the cells.

Each cell has a UITableViewRowAction "delete" which basically deletes the Firebase information. But when i press the button..it does delete the Firebase information but not the cell. In order for that UITableView to update I have to segue "show" back to any other ViewController and come back to ViewController #2 for it to update.

** This method only updates if there is more than 1 UITableViewCell in the table

Problem #2 - Only 1 UITableViewCell

Now if there is only 1 UITableViewCell loaded and I "delete" it....it never goes away unless I create a new UITableViewCell in ViewController #2.

What have i tried?

self.tableView.endUpdates()
self.tableView.reloadData()

Iv literally plugged reloadData() anywhere I could to see if would reload data but it just wont reload it!

let delete = UITableViewRowAction(style: .Default, title: "Delete", handler: { (action, indexPath) in
            self.tableView.dataSource?.tableView?(
                self.tableView,
                commitEditingStyle: .Delete,
                forRowAtIndexPath: indexPath
            )

            let uid = NSUserDefaults.standardUserDefaults().valueForKey("uid") as! String // uid
            DataService.dataService.deleteAudio(uid, project: self.sharedRec.projectName, vocalString: self.sharedRec.audioString )

            let currURL = self.sharedRec.audioString
            let url = "(currURL).caf"

            //Document Directory
            let dirPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
            // Full File to Delete Location
            let fileURL = dirPath.stringByAppendingPathComponent(url)
            // This is to print out all directory files
            let documentsUrl =  NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first!

            do {
                print("DELETED LOCAL RECORD")
                self.tableView.reloadData()
                try NSFileManager.defaultManager().removeItemAtPath(fileURL)
                print("file deleted (fileURL)")
                let directoryContents = try NSFileManager.defaultManager().contentsOfDirectoryAtURL(documentsUrl, includingPropertiesForKeys: nil, options: NSDirectoryEnumerationOptions())
                print("PRINT LOCAL DIC(directoryContents)") // NOT WORKING
                self.tableView.reloadData()
            } catch {
                print("error")
            }
            self.tableView.endUpdates()
            retu
        })