They see Poulin as an AHL goalie. Last year, he played 8 games in 3R and 30 in Laval. And he stayed there until the end. He is not a tweener. He will not be going between AHL and ECHL this year.
Not to mention right now, 3R has Desrosiers and Vrbetic. Last year, Desrosiers was mostly in 3R, but he was under contract with the Manitoba Moose and was only loaned to the Lions. Whenever he got called up to the AHL, it was there and not here. Right now, he's under contract with the Rocket. So if they need to, they can sign Poulin to an NHL deal and have Desrosiers in Laval with Primeau. And then they can sign someone on a PTO for 3R (or they can sign someone on a PTO for Laval and keep Desrosiers and Vrbetic in 3R if they choose to).
As for the Hammond option, I mentioned it in multiple posts that if someone falls to injury, they will have two options:
1- if the timing is synced and someone is placed on waivers at that time, they can claim him the way they did with Monty last year.
2- if the timing isn't synced and no goalie is on waivers, they can look to acquire a goalie in a similar spot as Hammond (goalie in the AHL who has NHL experience).
Yes he does have business in the AHL. I don't know if you watched any games, but he was solid.
I don't know if you consider an 18-8-3 record, a 2.34 GAA and a .920 SV% as not having any business in the AHL. In fact, he was much better in Laval than he was in the short stint he had with 3R.