The dehumidifiers will speed the process in a "gently" for the wood manner, worse will be drying with trying to increase temperature in the area. Cupping will unfortunately come together with any excessive leak on wooden floor. On a narrow strip like the one described, I would expect cupping to appear only in cases where the amount of water was excessive. As it sounds that will be the case, I would expect the situation to worsen over a period of 2-3 weeks, while the timber is drying.
Three-four weeks after the flooding the timber will stop moving and eventually (over the next 2-3 months) go back to a certain stage - how much it may calm down would depend on the amount of water absorbed.