SaintsBro

Another possibility: it was reported that another "playoff" team was also interested in Hartley; bringing him in for a workout for the Saints, as a favor to him, could help to drum up that interest in him, and maybe lead to him actually getting that shot somewhere else. If the Saints are kicking the tires and taking a look at him, hey that must show the other playoff team that Hartley is legit, right?

I don't think they parted on bad terms with him, I got the feeling they always liked him.... He just missed one too many. This could just be them doing a favor for him, to get that other team interested in maybe giving him a shot.