Regimes like that change only when forced by violence or credible threats of violence in their territory - actual power, not "soft power", it will change only because of large quantities of people in Belarus/Minsk actually make the change happen (as opposed to just asking for change). Looking around, who might make such a change?
1. Western countries definitely won't do that in Belarus, a boots-on-the-ground invasion like that seems totally implausible and would risk escalation into a military conflict with Russia, it's just not going to happen;
2. The Belarus opposition decided to explicitly avoid trying anything and limit their activities to nonviolent protests - last year there were some moments where perhaps they had a chance to overthrow the regime if they tried, but now the regime has succeeded in repressing the opposition (partly through acts like in this article), they can't rally masses as much anymore, so no chances in the short term;
3. Russia has no need to do that, they seem to be satisfied with the current direction and whatever deals they made;
4. Internally, the regime seems stable. Last year perhaps there were some questions on whether all structures of power would support Lukashenka, but that seems to be over for now - but IMHO this is the only thing that can change the country's direction, if the regime stays unified, Lukashenka will get away with all of this (and, most likely, escalate it) for a decade or more easily, the existing regime is stuck and can't change (since as soon as they loosen the grip, they'll end up like Gaddafi), but if a "court coup" happens, they might change the direction.
So all that's on the table is complaining loudly and sanctions that aren't going to be effective in the short term. I mean, the only way how sanctions can work is if they make the economic situation dire enough so that Belarus people actually do revolt, until that, the regime will make sure that the siloviki get their share of the dwindling funds and it won't change their behavior as that behavior is now required for their self-preservation.