Traveling in the online lane of D/s relationships has the potential to remind us of the fragility in what we do. By their very nature, online D/s relationships are totally voluntary on both sides, and that voluntary coming together is actually renewed every day, even with every back and forth between Dom and sub. Either can end it, any time, even with 'contracts' in force.
Being 'ghosted' is the cruelist form of breaking-up. Just leaving the other partner in a relationship with no explanations, no hints--that is really unconscionable.
But there are many other break-ups, some by mutual agreement over differing expectations perhaps, or one partner feeling he/she has gotten as much out of a relationship as they can, or even over uneasy feelings of becoming too emotionally entangled. All kinds of reasons.
Break-ups are (unfortunately, often) part of online D/s for many reasons. We tend not to talk much about them, or how to do them with style, but it is something to think about....a fact of the fragile nature of online dominance or submission.
Doing the best you can to minimize the bruises is a worthwhile goal if/when a break-up looms in your future.