Simple solution is to just accept that "ownership" is currently sketchy so both sides back off and treat the area as joint property and allow both sides to come and go as they like. Let's face it there's nothing there to get excited about other than it being an interesting historic site.
He was allowed in as he was missing his grandkids and wasn't interested in politics anymore - what a xxxxxx joke, plus being pardoned shows where the power and control really is.
It would follow then, if licences were suspended Thaksin's illness etc must have been a scam - otherwise the Dr's would have been in the clear -, but being Thailand anything is possible.