Yes, quite a few ex-DAL guys, in fact their chief Flight Engineer, a good friend of mine, is ex-DAL.
These folks appear to have a good business plan, best of luck to 'em.
They should do OK.
Also, regarding possible bonding, regardless of the bond signed, in the USA it is usually not enforceable in the courts in the event of furlough/terminatiuon, except for cause, except under very rare circumstances.
Now, if a guy was to 'run away' then absolutely enforceable, and the company would be quite justified in doing so.