I believe taking off clothes is fascinating because it's a new skill. My 2 1/2 yr old son doesn't do it at nap/bed time, but he has often turned up half naked in the middle of the day, proudly announcing, "I took my pants off!"
I think some of the other moms have good suggestions on dealing with that -- don't put clothes on in the first place, or snap them up in a one piece. You might also simply give them the choice. Let them pick their PJs, or let them decide whether they want PJs or no PJs, or if they're hot natured (my daughter will sleep in tank tops through the dead of winter without a complaint), come up with a silly choice, like "half PJs" or "whole PJs" and they can wear just bottoms or just a top.
It is hard getting back to routine after an illness, and 2-yr-olds are simply willful little creatures, so you've got a couple things working against you. :-) I think that as long as they're not sick, it's ok to gradually wean them off your presence in the middle of the night. After a month in the new house, they really should be acclimated to the change. While kids this age are married to routine, and get upset about it changing, it really doesn't take them long before the "new" thing becomes "routine."
Another idea, if you're not already doing it, is to find ways to wear them out before bed time. We've started taking ours to the park or to the mall play area before dinner to run them down :-). We had started having bed time woes and a friend mentioned she started doing active things in the afternoon with her little one and it really helped at night. It works for us. Not only do they eat dinner better (they work up an appetite!), but they're almost eager to get in their beds at night.
As far as climbing out of the crib, you'll need crib tents or it's time for toddler/twin beds. Because they're over 2, I would personally vote for beds. Another transition might sound daunting, but my kids and all of my friends kids LOVED getting a "big kid" bed. You might even take them to the store to look at them before you buy (or before you convert the cribs). Talk it up like it's a part of living in the new house. Add some other sort of "big kid" thing in their room at the same time, like a cute lamp, curtain, etc.
When we moved out first child to a big bed she was 17 months old and we were getting ready for the arrival of our second. We simply used our full-sized guest bed for her (with rails on both sides). We put it in her room next to the crib for a few days for her to get used to it being in there, then one day I took her out while my husband took down the crib and replaced it with a big Fisher Price kitchen center. She never said a word about the crib being gone and went straight to making pretend cookies :-)
Hope something works out for you soon.
Good luck!