I am constantly struggling with my Brassias so I can't really help here...but I recently bloomed a Mtssa that had two blooms: the first had a lower petal (is that the right word?) that looked like a stalk of grass and it was upside down for the first two days
The second wasn't perfect but it didn't have the weird things happening to it that happened on the first one.
It's interesting to read what Terri said about moving the plant once it's in spike...I did that and now I have an answer about the upside down bit
Thanks, Terri