1. tip the nose of your saddle down - for a lot of people a few degrees down from level works well.
2. you are wearing your padded shorts commando, correct? That is how they are designed to be work.
3. spin bike saddles SUCK. A good bike saddle will support you on your sit bones and does not have a lot of padding. You might need to try a few: Terry, Selle d'Italia, Specialized all make great saddles