My reading was "Yeah, we thought that was him but wanted to let you know it's not signed. Despite those two (unsigned) letters, he hasn't gotten back to us on exactly how to get the equipment back (phone, text, email, facebook, etc)....so it's not like we haven't tried."
I should probably re-read all of the documents, but it's how the information looked to me.....they tried getting in touch with him after Rob said he was trying to give the stuff back but he wouldn't respond. THEN the filed the replevin.