Unusual growth on intergeneric hybrid

[WhiteRabbit]

No i.d. for this plant

I have had this plant a few years and not seen this before. There are two recently matured pbulbs that have what looks like a much smaller pbulb growing on top, and one of those has pushed out a weak looking spike! (doesn't look like the buds are likely to develop to me).

I don't generally use superthrive, so that's not the cause ...

Is this something that just happens sometimes?

We'll see if that spike actually blooms

I just found it very interesting