At some point I hope a rich person will take on the bond maker. What other profession effectively blackmails you. As for the original signing of the bond, well again would a jury find against you,when no sign = no job.
I have a colleague who was converted into a new type & never got asked so never signed a bond. However on leaving for a better job he got a bill. So said I have no bond. The reply was no pay no reference so no airside pass. Obviously imho he would have won a court case but by then his new cream job would have passed him by.