I highly doubt Hungary would even remotely think of doing something like that, not because Orbán is a rational individual (he isn't for the most part), but because it would result in complete collapse of practically everything Hungary has been building in last decade and more. It's an export-oriented economy with minimum unemployment and a main emphasis on FDI's, especially from EU (mainly Germany) and a few other highly developed countries like Japan, and roughly 80% of its exports go towards the EU. Sanctions of any kind towards its exports and economy in general would be political suicide for any politician in charge of the country.
As a side note, a couple years ago or so I attended a lecture by a security expert from one of the main universities in Budapest; he pretty much described the Hungarian armed forces as a joke even for 'low military expenditure EU member state standards' and its capabilities far lower in reality than on paper due to apparently some major procurement and maintenance issues, resulting in a good chunk of their major equipment not ready for actual use most of the time.
Ultimately this is just an expected populist move by a populist politician to whom 'border security' has been one of the pillars of his policies ever since the 2015 European migrant crisis.
