What are tenants rights when home in foreclosure, broker doing a short sale and lease just expired, tenant now month to month?

We have been renting for 2 years in FL, lease just expired 3/31/13 and are on verbal month to month as of 4/1/13. Broker for owner listed as a short sale & had a cash investor offer the same day. Broker tried to get us to sign Non Owner Occupancy implying we would receive $3,000 for relocation assistance and sent addendum to lease with incorrect information. Also told us when they receive approval from bank and closing date we would have to vacate in 15 days. I feel like broker is doing something fishy. I emailed everything they're trying to get me to sign to the bank's atty with my concerns. Atty said they will forward all to the bank. (1)Can we submit a purchase offer directly to bank's attorney? (already pre approved) (2)Are we eligible to receive any of the relocation assistance money if we sign the Non Owner Occupancy Certificate? (3) I revised their addendum and sent back to broker signed, but if owner doesn't sign and we stay on verbal month to month how much notice to vacate