Yes you can remove lock from inside. If someone in the forum can send you a pic of the lock from the inside you can get an idea as to what will work to remove lock.
You need to remove a rod that goes from the key lock to the trunk latch. Remove U clip holding lock to body Pull rod out thru the key lock hole put blade screw driver into latch, turn, and trunk opens.
69's are bolted to the body, and very hard to get to from through the back seat.