O. scyllarus live subtidally and typically do not encounter the air - water interface. Generally, they will not crawl out of the water, but I have had a few over the years climb over egg-crate dividers that extended a couple of inches out of the water. This usually happened when they were trying to get to an animal on the other side. Also, if the animal panics, it could jump over the divider. I've seen O. scyllarus jump out of the water a couple of inches and travel about a body length. Still, I would say the chances of your animal transversing the barrier are small - but it could happen.
There are a few stomatopods that frequent are found out of the water - or at least with their backs out. These are all reef flat or grass flat species that hunt at low tide when predators are driven to deeper water. The species that I most regularly find on exposed flats is G. smithii, but G. falcatus, H. glyptocercus, G. platysoma, G. chiragra, G. viridis, N. bredini and P. ciliata all can be found out of the water.
Roy