You might contact the author of the File Exchange submission you're using to see if they can provide assistance. I'd guess that the "grid" you see on those plots aren't the normal MATLAB axes grid, but are really just lines drawn to form a grid. If that's true, the commands you've used to adjust the grid properties are probably not having the effect you desire.
I suggest that you check the values of the figure's *InvertHardcopy * and *PaperOrientation * properties.
* Setting InvertHardcopy to 'off' will probably resolve the re-appearing gridlines issue.
* I'm guessing that the PaperOrientation is something other than 'Portrait'. If that's the case, setting it to 'Portrait' should fix the rotation you're seeing in the generated output
Hope that helps.