I'm assuming that he's pulling the whole hub assembly with the drum attached. The wheel studs are peened in place on the front hubs, and the drum doesn't come off the hub easily. There have been reports of bearings getting stuck on the spindle, so that might be something to check.

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.