read section B of the law
it provides the entry point for a lawyer and agro tourist to possible fight back
http://www.nationalaglawcenter.org/assets/agritourism/virginia.pdf
B. Nothing in subsection A shall prevent or limit the liability of an agritourism professional if the
agritourism professional does any one or more of the following:
1. Commits an act or omission that constitutes negligence or willful or wanton disregard
for the safety of the participant, and that act or omission proximately causes injury,
damage, or death to the participant;
2. Has actual knowledge or reasonably should have known of a dangerous condition on
the land or in the facilities or equipment used in the activity, or the dangerous
propensity of a particular animal used in such activity and does not make the danger
known to the participant, and the danger proximately causes injury, damage, or death
to the participant; or
3. Intentionally injures the participant.