The criminal code is the criminal code & until the court process is complete, it hasn't changed. The OP asked if he could be charged, not whether he would be charged. The likelihood of any charges being pressed at present are likely slight to nil. But different people have different tolerance of risk & so for some, even slight is too risky.
Be found naked by police in a MP or micro with SP found to be trafficked & your odds of being charged with something just might go up. It may be an assault charge rather than a charge under the prostitution laws, but that would be cold comfort to the guy wanting to steer clear of police involvement. However, by choosing to steer clear of situations that violate the sections of the criminal code I listed, one is also avoiding pretty much all other situations that might draw the eye of LE or just being caught in the wrong place at the wrong time.
As for the Ontario court striking things down, only parts of it. Only parts. Like, you still cannot hire yourself a 12 year old hooker, nor can you try to hire someone who is not already in the sex trade. No part of the procuring laws were struck down. What was struck down (and now under appeal & thus not definitively decided) were the laws regarding bawdy houses, communicating for the purposes of prostitution and living off the avails of prostitution (which I did not include in my earlier post because it has no bearing on the customer).