Don't drive it more than you have to (aka to a local alignment shop). It may make it fine, but with suspension loose, your only asking for trouble, and it could be very serious trouble.
If I were you I'd take it to a local alignment shop, have them align it. Save the recipt, and get the alignment shop to write you a letter stating that the shims were gone. Take the recipt and letter to the shop that did the bad alignment and give it to them. Hopefully they'll understand and pay you back for the alignment.
If possible maybe you could call the alignment shop and tell them what happened, hopefully they will work with you and help you get it fixed.