Andrew,
The following was taken from European Air Scene for w/b 4/9/2010.
Meridian A/W has been added to the EU list of banned carriers following serious & persistent safety concerns. The airline operates DC-8-63F freighters, though only 9G-AXB (46097) is thought to be active, with 9G-AXA (46113), 9G-AXC (45999), 9G-AXD (45927) & 9G-AXE (46041) believed impounded at Ostend
From what you saw, this would lead me to believe that 9G-AXA at least, has been released from impoundment and was on its way home to Ghana.
Alan