Laelia purpurata pseudobulb yellowing

[DeeP0]

A few weeks ago, I ordered my first two standard catts. One of them, my Laelia purpurata, has had a growth yellowing the past few days. It may have been shocked from my home, since I had to haphazardly pot it in a slightly larger pot since its previous one was broken from transport, and the roots on this specific growth have dried due to being all aerial. Also when I moved my plants outside last week, it was fine until yesterday, when I noticed some slight discoloring suggesting a burn. I watered today and took pictures. There also appears to be a new growth forming on the yellowing pseudobulb in question. Could anyone tell me what they think it is?

Edit 1: Photos won't upload. Reformatting them.
Edit 2: Got 'em. And apparently uploading them tilted them...

[isurus79]

Looks like sunburn on the leaf.

The plant looks dehydrated though. You will also want to tie the plant down because it looks like its slowly falling forward and out of the pot. I'd tie it to the pot through the drainage hole and add a bamboo stake for each p-bulb.

[DeeP0]

Thanks. It's been a little dry, and I've only had it for about 3 weeks. I've been soaking it to rehydrate, but maybe I should soak it a bit longer each time. Also, I was thinking sun damage, but I find it weird that it's only the leaf on that bulb, but none of the others. Plus in the same window of the porch it's next to two other catts, a catasetum, dendrobium and a brassia. None of the others have shown any sun damage.

As for the tilting... I'm going to take your advice and stake them tomorrow. It has a new growth starting on roots, so I'm waiting for those to show a bit more before a thorough repot.