First off, be careful. I had a similar experience due to my stupidity but I had Good Sam Towing and a tow truck lifted the 5er and I was able to hitch the truck up to it and get it home. No charge. The tow truck driver put a loop around the front of the unit (34ft) and I called a mobile RV service to fix the landing gear which had a stripped gear. That was 10 years ago and hopefully I am older and wiser. Probably just older. Don't go crawling around under the trailer with a bottle jack 'cause it's HEAVY. My 2 cents worth.
Stan Mitchell
Las Vegas