front drums w/o hubs?

I think there was some smoke over the issue about needing to pull the hubs off: Of my two drums, one hub was securely mated to the drum and the other was clearly in two parts so I left the store thinking that separating the other drum/hub would have been easy enough. And - the guy at the shop may have been wrong or it may have been that HE was unable to turn them with the hubs attached. It does seem logical that a properly equipped shop would be able to do drums without removing the hubs.

Let's just not lose sight of the actual POINT to my post which was merely to offer a better procedure for separating them if you want to for whatever reason.