Morin may pass at final roster cut time, when most teams are set roster wise, but I wouldn't be surprised if he was claimed either. It really depends on if just one other team likes him more than their 7th or 8th guy. It's certainly possible as the bar is rather low. Also that team's 7th/8th guy may be able to be sent down so there isn't really any downside for the claimer, potentially.
The Flyers could keep him at 8th as things currently stand roster wise and still have a spare forward for the road. They may sign a vet though or just decide that Morin needs the work and it is worth the risk (and they are close to cutting bait anyway and don't care that much if he is claimed).
This chatter to kind of prepare the fan base to losing him for nothing seems to indicate they will waive him, even if he may be claimed, or will try to trade him for a depth pick. Kind of a bummer but I don't really blame them with as many young D that have passed Morin on the depth chart by now. I don't see the harm of keeping him as the 8th and emergency reserve for a season if he is healthy but they really want him to play and it does make sense that he needs to.