OOooh, How exciting. I have none of these plants so I can't say for sure but...if I had to say I would say spike as it is coming from the right place!! Keep us posted.
Can't be sure - looks kind of fat, like new growth, but is the right spot for a spike. I have had new growth on Onc alliance poke up in that spot on occasion tho. Looks to be hung up a bit in the bract foliage. What does the tip look like?
It looks like a spike to me also, even though I don't (or, more correctly, can't!) grow odontoglossums. Very exciting. Looking forward to seeing pictures of the blooms.