The inside of the pin sure looks to be threaded, like all the guide pins I have seen. Try threading a 6mmx50 bolt into it (I think that is the size for pulling the guide pins, off the top of my head). If it threads in, unthread it, and use a socket and some washers as a puller. Just don't tighten the bolt real tight, when it starts snugging up, back it out and add a few more washers.
If it doesn't pull, is there another pin holding the other end that could be pulled to remove the whole assembly?
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.