To unlock all of features of Rams On Demand please take a brief moment to register. Registering is not only quick and easy, it also allows you access to additional features such as live chat, private messaging, and a host of other apps exclusive to Rams On Demand.
Snead is reportedly the one who led the push for Simpson, which apparently led to McVay being sold on him, but you do make a good point. While Snead was the GM during the Fisher era, he primarily would facilitate acquiring players that Fisher wanted, so it's likely that Mannion was Fisher's call.