Let's not get carried away to far here.. first of all apology accepted
Now let's try to fix this
If the splice is the source of the leak only dig there to see if it's there... if it is leaking there let's see what can he done. I would see if the pipe is filled with water to the point it could be siphoned out, if it has then get as much out as possible.
Where it's spliced I would try to make a dry zone around the joint, I would dig under it and fill with stone and fill with stone in a circle around and over the joint as then no water could stand around the joint and weasel in. If you see where it's leaking, pm here and I'll send you out a seal I've recently acquired for such issues,it's a rubberized shrink wrap seal that you can put on with a heat gun. Be very very careful tho, the melting point of the shrink wrap is not a lot cooler than that of the black tile but it can be done