Are you looking at this 'out of plumb' condition just after parking trailer and having to maneuver it/tight backing etc.
OR looking at this condition after trailer has been pulled straight forward for several feet.
Tight turning/maneuvering with double axle trailer WILL cause front/rear tires to be off set.
Now if offset is there after trailer has been towed straight line......then you need to locate a trailer shop/big rig shop (not some RV Repair or CW) that can do trailer alignments and re-arch axle tube if necessary.
Otherwise you will have to be dealing with blow outs/worn tires/lousy tracking while towing trailer.
IF they are 'out' and not just 'jacked'