About a year ago or so the devs announced that they were pulling the [b]Exodus Crash[/b] and [b]Inverted Spire[/b] Strikes from the Vanguard Ops Playlist and Nightfall rotation until they can rework both of them (much the same way the [b]Arms Dealer[/b] and [b]Lake of Shadows[/b] Strikes received reworks) to better fit the current pace of the game. To the best of my knowledge they have not recently given an ETA on when these two Strikes might return. In the meantime the older variants of both Strikes can still be accessed via their respective nodes on the Nessus map. (΄◉◞౪◟◉｀)