had something v similar a couple of weeks ago.
My fault - I'd got my 'CL' and 'LM' grease mixed up and put the wrong stuff into the hub without noticing, so it pretty much disappeared.
I found that I could 'wobble' the drum, but not get it off by hand.
I also have a puller that was too small, so I just slipped a couple of the wheel nuts back on and tightened them up onto the tips of the puller legs. A bit 'dodgy' but it worked for me, probably because it seemed all that had happened was the inner seal had melted and formed a fair bond with the stub axle. So I didn't really have to put much force onto the puller at all.
If it's something more serious, then this probably wouldn't work without trying something else - maybe putting holes in a couple of bits of 'angle iron' or somesuch and bolting them onto the wheel studs and giving the puller a better grip?
Or find someone with a bigger puller??