There is an awful lot to be said for loyalty, integrity, and having a sense of what is right and wrong.
Sadly, aviation is not one of those industries these days
If it makes sense financially...and it suits you to move..then move
Put the shoe on your employers' foot for a second...if it suited them to make you redundant, how long do you think it would take to make that decision?
As for the bond, well, that depends on the arrangement you entered into.