I would definitely start looking for a place to move to. However, the bright side of this is, you should no longer pay any rent unless the bank notifies you through an attorney and sends you a copy of the "Assignments of Rent" clause. Most likely you will live rent free through the duration of your stay. I would advise you to definitely not continue to pay rent to anyone but the owner directly. If this guy is not the Owner of Record, don't pay him.
When the bank forecloses on the property, it will be sold at Sheriff's Sale, and then they will have to give you notice and time to move. More likely than not, this whole process will take many months and you should have enough unpaid rent saved to move elsewhere. In Philadelphia, as Michael Cohen adised you below, the Sheriff's office may offer assistance and direction. The bank, once it officially forecloses and buys it back at sale, may even offer you cash for keys. They will offer incentives like moving assistance to motivate you to leave and surrender the keys.
Please feel free to call me if you need further assistance. Good luck with everything.
All the best.
REALTOR, Property Manager
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