I have it from God (and I have His permission to say so) that those local leaders of the LDS Church who bully someone into resigning will be held just as accountable before God as if they had excommunicated these people. To force or pressure someone into resigning may look good* on the books, but carries no weight in heaven.
*Looks good because "they chose to leave; we didn't kick them out. It wasn't our fault they chose to apostatize and leave." Such reasoning won't work in heaven.