[Richard]

When that very thing happened to me, the steel rod pulled out of the plastic wedge. And yeah it was in a tight place . Hmmmmmmm. What to do. No way of grabbing the wedge. So I found a lag bolt, with coarse lag threads, and heated it with the torch just hot enough to soften the plastic. I would thread it in the wedge until it cooled enough so it was hard to turn. Back it out and do it again. It took about four tries before I had about two inches threaded into the wedge. I put washers on the lag bolt the last time and pried against the washers to break the wedge loose.