Since Roman is apparently well known IRL, and putting aside any moral obligations he may or may not have regarding the returning of the money, I cannot see him completely running away from his debts, simply because it is not cost effective.
The reason you "cannot see" is that you are, in simple words, an idiot. The symptom of this idiocy is that you willfully ignore plain reality if it happens to be uncomfortable - such as for instance this plain statement that you're an idiot, such as for instance the plain obviousness of the situation being exactly opposite of what you "see".
Shtylman is a guy with unserviceable levels of debt. He will walk away from it whether he wants to or not. Whether he sprouts a rambling set of emo nonsense a la
Kludge or simply keeps quiet is entirely irrelevant to this point: you can't get fifty dollars out of a dime, and so you won't. No matter what you see or don't see or how unfair or disturbing this
fact may be to you. Because fuck you and your feelings, that's why.
The problem is that you knew, or reasonably should have known, that Shtylman is a guy with unserviceable levels of debt. Last time he was hacked and couldn't repay he became one of these walking dead people who are immune from any sort of prosecution. Once you owe more than you can repay it makes absolutely no difference how much you owe in total, ten dollars or ten billion. Giving any sort of credit to such a guy in these conditions makes you sir too stupid to live.
Please do something about it. Preferably about the "stupid" part rather than the "to live" part, and preferably before that reality previously discussed makes its own move. This because reality doesn't give a shit about your feelings (because fuck you, that's why) and consequently is likely to pick the unseemly alternative.
Fucking pussies everyone's raising these days, it's unconscionable!