Worthy of a thread by a supposedly professional on this here forum? Don't think so!
You're probably correct but cut the OP a little slack for a request for information in R&N?
If the skid marks really are at 90 degrees to normal track and at the northern end of the runway (my presumption) then I'd guess the excursion would have been of considerable interest to both the passengers and crew!
I wouldn't like to estimate the drop to the sea but it always looked pretty dramatic from my perspective.
Didn't someone post some aerial photos here of Skiathos ages back?
Disclaimer: feel free to ignore or ridicule my comments, I'm only SLF with enough of an interest to have quietly observed here for several years.