call another plumber yours doesnt want the job...........

you should of been using several fans or better go buy or rent a couple
dehumidifiers of blow heated air under the house, probably the fastest
way to dry it up.force heat in near the wet area, let it exhaust thru
vents.

is your crawlspace properly vented? or are you one of those sealed it
up miss guided folks?

add another access door closer to the problem area, so when something
like this happens again access will be easier.

CALL ANOTHER PLUMBER RIGHT NOW.