Hi Smokeymoose907,
Welcome to the forum.
This has happened to me in the past. There are probably other reasons, but what caused my problem was stuffing the sausage too loosely. After bring the sausage up to 135°F to 140°F, if the casings have not adhered to the meat, that air space will fill with water during the poaching stage. Most of that water will not be absorbed into the meat. You can prick the casings to allow the water to flow out. I've also learned through my mistake that when this happens your sausage will loose a lot of flavor. The rest of your process looks good.