Originally Posted by
operator
As I have been corrected before, it's highly unlikely you'll pull BOTH sides of the axle, simultaenously out of their dropouts.
More likely is that one side slips and your wheel jams. Usually this occurs when you're starting from a stop. You really don't have much to worry about.
Yeah it will suck but you're unlikely to get injured if you have the wheel far enough back in the dropouts.
Some chaintensioners can be modified to work with horizontal dropouts but it's probably a waste of your time and money unless you are running a QR.