"Anonymous. If I mistakenly try to produce a very tight turn on a Curving Feather Step will my second step become something that resembles a side step instead of a foot that is tracking the other one."
If you let that happen, yes. But you can also learn to create a sense of tracking along a curved, rather than straight path. This works best when rise is incoporated to aid in the curving of the path.
"Which reminds me of something I read once That I am not even a bus, but I am a tram that travells on predestined tracks once that first step is taken."
Yes and no. You have inertia to continue in that direction, and so most figures will see you go that way. However you can also add a push in a new direction. So for example in a quarter turn, you push sideways from the first step, with the result that an original movement DW becomes a movement along the LOD - you change the direction of travel by 45 degrees.
Similarly, you can do this as a curved movement. But you must create a sense of connection between the steps. Straight lines are the most logical form of connection, but not the only option on the table.