I'd say this is a non issue. The arch is easily flexible enough that if you just re-tighten the securing bolts (which might need panel removal to get at) and twist it straight as you do, it will be fine. And then re do the silicone sealant. If the bolts are a bit wimpish, add a few more. Silicone sealant cleans very effectively with acetone on a rag incidentally.