I would suggest to read your Lease.
Do you find a clause that prevents Landlord to sell the property during the Lease term?
Do you find a clause that prevents Landlord to show the property to prospects that want to Buy?
How much notice are you entitled to have to vacate?
Who is entitled to break the lease in the event of selling the property?
Everything should be there, just read and if you will find the answers....
Short Sale is a just a SALE,
It does not mean that the homeowner is necessarily behind his mortgage payments.
And since foreclosure take months, you probably are going to be able to finish your Lease.
You should consult a Local Real Estate Attorney that is familiar with your Estate Laws before to do anything.