Next time it doesn't start, pull the shifter to neutral and try again. Sometimes just jiggling isn't enough to overcome bad shifter bushings.
As for the steering wheel, it doesn't lock until it is turned a certain amount with the key out. Not sure how far that is though, I do know once and a while I inadvertantly yank the wheel getting in/out and it will lock.
'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.