The hellhound's wounded, which means the more immediate problem now is whatever spell the two red sorcerers are gearing up to cast.

Sam doesn't plan on waiting around to find out what it is.

Can't give them the chance--got to get them both at once--

One more step forward, and it's just enough. Sam lifts the sideways-lying table and shoves it through the air at them, putting all his strength behind it.