I was given a recognisance to sign once before. I had only started learning about commerce and law etc... I was clueless to be honest.
I wouldn't think signing a docket as a promise to appear would implicate you. If you refuse to sign it you may appear guilty. Once you're not signing as surety and solely as an honorable promise to appear to resolve the issue I'd imagine it should be alright...
As always though, I could be wrong... :p
Printed copy · Anthology Volume 1, page 26 · cut by a page breakPrinted copy from The Tender For Law Anthology, Volume 1, page 26 (printed 14 June 2014). Added by this site; not part of the Facebook export. A page break in the printout cut off the beginning of this comment, with its name.