According to Crawford there is nothing in the rules that allows for you to willingly forego a saving throw, on the converse there is nothing explicitly disallowing it either. In fact he himself would allow it with a couple of caveats.
No rule lets you opt to fail a save. As DM, I might allow it, assuming
you aren't incapacitated or dominated.
In addition there is nothing said about willingly foregoing checks and they are fundamentally different than saves. If you were not able to willingly "fail" checks that performance for the guard's benefit by allowing yourself to be pinned might not ever happen and these types of role-play scenes are essential. A spell is slightly different than wrestling with your cellmate but the concept is still there.
To me this is akin to throwing an arm-wrestling match. If you can't forgo a check in some of these cases it just doesn't make sense, especially if you know it is coming. I might add to Crawford's caveats that you must be at least partially aware that the caster might do that to you. It could be very fun if say the villain did it again later and got a "willing" recipient.