Any holder can burn any amount of the coin at any time and receive floor multiplied by that amount, from grounds, in the pair asset. This does not touch the curve and does not need a pool to have liquidity. It is an exit that always exists.
pairOut = amount × floor
Redeeming counts as a sell for steep purposes: it sets lastSell to now. Redeem what you want to leave with and leave the rest steeping.