We laugh at the "testing cycle". Our DS is 2 and about every 3-4 months we have to re-train him to sleep thru the night. I don't know if it's growing, slight changes in schedule, or what, but we'll have several nights - sometimes a week - of training, then we're back to some well deserved rest for all of us.
He'd get himself wound into a tizzy sometimes when he was younger (10 months). We found Colic Tabs by Hylands (has chamomile in it) could be helpful. You can does them every 15 minutes for the first hour, and, after an hour he was usually sound asleep!
Until just a month or so ago we were still getting up between 3-4am for a bottle with him. Other than that he was sleeping thru the night and it seemed so minor we didn't press the issue. We changed the bottle from 6, to 4, to 2 ounces over a few weeks and now he doesn't expect it at all and is sleeping thru the night. Sometimes you have to pick your battles...
Only other advice I can give is to take turns with your hubby. We would take alternating nights or before midnight is me and after is him... depending on schedules. Whatever you can find to cope!
Good luck!
T.