I'm no expert but I would imagine it's a prism or lens/es knocked out of alignment and therefore would be a rubber off disassemble and rebuild or some suggest giving them another bang to try and knock back into position whatever is out but it sounds pretty bad.
Bins do not like dropping and luckily I've been over carpet or grass on the rare times it has happened but I always toss the neck strap over folks who often like to try my bins especially non-birders which they see as an enormous fuss but not as much as if they get the bill for wrecking my bins.
I think you really need to decide if you want to send them to Hawke to look at but contact them first. Hawke service is very good and I am sure they will help as much as they can. I would try them.