What Battuta said. As far as we know the only thing able to collapse a node is either a whole lot of meson bombs, or five super reactors like the Lucifer had.
Minor Homesick spoiler:
While it is quite a while that I played it, but I think even in homesick the collapsed jumpnodes were not fully stable. If I remember correctly the first node only fit corvettes or smaller (and destabilized completely after the Deimos was through) and the others needed to be stabilized by the Ravana to be traversed at all.