DMSP F11 exploded in the same way 11 years ago. See the last paragraph here:
Some anonymous user from Washington DC deleted the above reference from Wikipedia on 6 June last year (and that's all they did). Now, the discussion on this site, full of clever, well-informed people, is without that information (it would have been just above F13). That in itself is interesting.
I was at a meeting last week where we were shooting the breeze over satellite-killers and how if you were going to try out your technology, what type of target would you use? For the USAF, an old, inoperational, big weather satellite was the one we would choose = F11 and now F13.
But you are right (no sarcasm intended), we have zero proof and propellant explosion is more probable.