05-25-2013 03:40 PM
Not unless you have put something in place beofre you lost the password e.g. setup SNMP access or BNA - then you would be able to get the configs.
Put that being said, I suggest you connect via console and reset the password on the FLS - for this you will need to reboot the switch - so down time is needed. Also note there is a risk that config was not saved that you should take into account.