that's insane. the car is illegally on your property - something is not right about the whole picture. but i dont think you should worry about being charged with anything. here is the FLA law that allows for the owner of property to have the vehicle towed - this link under section 713.78
which states in part that a vehicle can be towed legally when the owner of the property requests it.
2) Whenever a person regularly engaged in the business of transporting vehicles or vessels by wrecker, tow truck, or car carrier recovers, removes, or stores a vehicle or vessel upon instructions from:
(a) The owner thereof;
(b) The owner or lessor, or a person authorized by the owner or lessor, of property on which such vehicle or vessel is wrongfully parked, and the removal is done in compliance with ...
as to the eviction, you need to start those proceedings. a notice to vacate has to be mailed - and then you can file the documents in court - which then will allow you to have he sheriff remove them
since you live in another state, you should consider consulting with a florida attorney to do that for you - you can get a referral from the FLA Bar Associaton.