Based on IIROC's policy, it's common for them to halt a stock for pending news—either upon company request, to prevent any market advantages, and/or to the review the authenticity of the content within the pending press release.
Evident by SPRWF resuming trading today, there's nothing awry with the company and they have satisfied IIROC's screening of today's updated press release.
Also...yesterday I contacted the T/A:
Computershare Trust Company of Canada Inc. Transfer Agent 510 Burrard St. 3rd Floor Vancouver, BC, V6C 3B9 604-661-9400
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