Seen some other comments about getting out of ride armor. Currently it's up and jump simultaneously to exit the armor. However, I agree that holding up and jumping would be preferred. After some cross comparison of the ride armors in original MMX games (tested it from MMX2), the inputs do not 100% match. In the originals you can jump out while holding up. In this current version of Regenesis, 1.00.61, you have to press both up and jump together.