I think the landlord is a real chicken poop for not manning up and giving you an answer BEFORE the lease was up since you originally asked them about it WAY before the lease was close to being up. IANAL, but I think you are technically already in a month to month (m2m) lease situation, based on my family's and my own 40+ years of rental experience. But that's based on TEXAS law.
You oughtta contact a real estate lawyer or maybe Philadelphia's "Renters' Association" or "Tenant Council" (many big cities do have them for the expressed purpose of advising renters about their rights). The laws vary from state to state (and even sometimes by city if they have specific ordinances relating to rental units). Take your copy of the lease for them to look over. Sometimes the legal mumbo-jumbo in a lease has references to end of lease / m2m transitions.
Many state laws on rentals is such that if a lease expires without renewal and the renter pays the last valid lease's specified amount on time, the lease "converts" to a "m2m" lease that then just requires a 30 day notice to vacate, with the definition of "when does the 30 days start" being variable. So in that scenario, if you paid the Feb rent on time, if the landlord wants to boot you out, that would take you to the end of March. Don't know how the eviction process runs up there, but down here in Texas that can take anywhere from 2 to 4 weeks - how long to get a court date set, the time for appeals, when the constable's office can provide a constable to oversee the boot out, etc.
Lots of variables, which is why I stated first - talk to a lawyer.
Worst case? Sign a 1 year's lease and then bail in 6 months. God knows my parents had more than one of those happen in the 40 years they had rentals. Which is why they finally went to an all "month to month" system 20 years ago. If the landlord is real bitchy, they might ding your credit report but they're not gonna follow you all the way to FL to get unpaid rent - would cost them more than they would get.