Spike TV is american, as you pointed out.
During regular programming as a specialty channel, they have national commercials, and they allow cable operators to insert local/state commercials, make money by distributing the channel which translates in lower subscriber revenue fees.
In Canada, specialty broadcasters didn't want canadian advertisement money to exile to american broadcasters or go want them to pay the local cable company for advertisement insertion in american feeds. So, that's why you see US national advertisements followed by Shaw Direct/Shaw Cable promos.
So, when Spike turns on the "canadian feed", the US national advertisements may not be suitable for Canadian audiences, and they can't sell canadian advertisements, so... they operate the channel just like a Shaw Media specialty: repetitive promos.
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