if this has gone through your insulation there may be small shards of fibreglass. i would definitely wash everything and i would use retayne to keep the colors from bleeding. normally you would wash like colors, but now you may be washing different colors together. and be sure to clean out the dryer filter very well during and after each wash. don't try to push too much into one load at a time. you won't get out all the bad stuff that way.
you know that this plumber will give you a hard time about this. he'll have 47 reasons why it isn't his fault. be prepared. you may have to take him to court or at least small claims court. UNLESS the pipes are so bad that they leaked in an entirely new place.