Is such a tool on the market?
The answer is NOT an angled plastic tube remover because sliding off the tube is NOT the problem. The problem is releasing the lock tabs.
As the attached photos show, one must squeeze the tabs together and then push them into the connector in order to release the lock, and the connector is mounted with the lock tabs out o sight. Worse, the fuel filter is recessed between the fuel tank and chassis structure. there is no way to put a finger on each tab from opposite sides - no way short of first cutting off a finger.
Given a sufficiently small right-angle clamp (a specialized type of vise grip, one could make an appropriate tool by filing a 1/16" ledge on each jaw. Then one could squeeze the tabs inward from underneath the vehicle and then pull the clamp downward, At worst, the frame of the connector then would hold the tabs in the released position, and one could use a small screwdriver to finish releasing the lock.
But so far I have not found a sufficiently small right-angle clamp.
Any help would be appreciated