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Actually, now is a good time to tell them about the warping issue since I'll be making an appointment for them to replace the inside controller panel. Not only are the panel corners warped...one of the panels actually developed a crack/split right down the middle of it which progressively got worse over the last 8 months. The crack now runs from top to bottom for about 80% of the panel height. This spa was purchased new... but gave me nothing but problems since day one! They've been out to my house 7 or 8 times for repairs so far in just 2 years.
OUCH! I am starting to feel sick just thinking about it.!!!
This doesn't sound like a panel problem, but a wood frame problem. Panels can be easily replaced, but if the frame isn't repaired, the problem won't be fixed. Wood, though, is easily fixable and I am sure that the integrety of the spa is fine. With HotSpring's foam, the spa is like a rock. Though it seems bleak now, I am sure there will be a sound fix and repair...most likely without having to replace your spa.
Okay here goes a try at a picture of my problem.. its upclose but to get an idea that gap at the bottom is about an inch wide.
From looking at teh picure IMO it shouldn't be a major fix but the dealer/service person could tell you by seeing it up close. The panel "clips" in place on the side of the spa. From the picture I'd imagine a clip came loose (male or female) or the wood broke (a vertical piece that can be replaced).