The rest that comes naturally to me is the lean-many only lean their upper body (some do not lean at all) and push down on the peg and don't pop up their butt shift it over and keep posture.
Each to their own style that works for them.
Watching professional motorcycle races shows that every rider has almost the identical body position in taking turns.
The Spyder was designed for a sport touring riding position-as documented in owner's manual and is not a cruiser. Those of us that convert our riding position to cruiser style, by using bar risers, highway pegs, seat butt position, upper body more straight up, are adding a more comfortable ride for highway cruising. This highway comfort is at the sacrifice of speed through turns.
If and when BRP comes out with a Spyder Cruiser the weight distribution of the bike will be different, handlebar and footpeg position changed and its ability to take turns at higher speeds will be reduced. Laws of Physics.