I just had something VERY similar happen (chocks slipped out, trailer moved enough to bend the jack) while at a campground. Got a replacement Harbor Freight jack, hitched up with help from my bottle jack, then swapped jacks. Really not a bad job at all.
Mike Butts
DW+DD+DS+Poodles
2017 Forest River Forester 3011DS (first MH!)
Previously 1999 Coleman Santa Fe pop-up, 2007 Kodiak 23SS hybrid, 2013 Sunset Trail 29SS travel trailer