Angraecum with shriveled leaves

[SouthPark]

Leaves still being quite firm is a good sign. A little bit wrinkled only is not too bad.

Sounds like the orchid is recovering - which is the main thing. Whether the leaves revert to original unwrinkled state will later be seen (with time).

As long as the leaves still have a pretty good form - as in staying firm and no extra degradation, and shows signs of recovery, then that will be fine.

Some extra monitoring and control systems might be needed for the green house to cut down on chances of vents not opening when they need to be opened.