It's a little bit more complicated than that. This is at page 4 of the paper, the second paragraph from the bottom on page 4. Essentially, the situation is this: if you're released on a very serious charge that you would be eligible for detention on but you're not detained, and then you commit another whole series of offences that fall below the threshold, so you can't be detained for those offences, the crown can bring you back and have the bail reviewed under section 524 to try to have your original release cancelled or revoked. But we cannot detain you on all of the new charges, no matter how many new charges there are, if they fall below the threshold of “serious offence” as it's defined in the bill.
On June 17th, 2010. See this statement in context.